Abstract: Methods, system and computer program product, the method comprising: from high level language code (HLLC), receiving a request for reading a data set from a tape onto an object storage connected over TCP/IP to a mainframe; from the HLLC, allocating a data set on a tape comprising information to be imported, the allocation being in a format of the stored data set record and associated with a JFCB, the tape is mounted in SL mode; updating the JFCB to BLP mode; reading from the tape VOL1 data, and for each stored file initiating by the HLLC: reading HDR1/2, content block-by-block; EOF1/2 of the file; organizing the VOL1, HDR1, HDR2, content, EOF1 and EOF2 in the object storage; and closing the tape, wherein said reading is performed without setting a JES of the mainframe to BLP mode, and said reading is performed without unmounting the tape after each file.

Abstract: A first copy of a database object may be constructed prior to applying a designated database update request to a first database. The database object may be represented by a plurality of database table rows in the first database, and the request may update one or more of the plurality of rows. The request may be applied to the first database to update the one or more of the plurality of rows in the first database. A second copy of the database object may be constructed after applying the database update request to the first database. A message identifying a difference between the first copy of the database object and a second copy of the database object may be transmitted to a remote computing device.

Abstract: Methods, system and computer program product, the method comprising: from high level language code (HLLC), receiving a request for reading a data set from a tape onto an object storage connected over TCP/IP to a mainframe; from the HLLC, allocating a data set on a tape comprising information to be imported, the allocation being in a format of the stored data set record and associated with a JFCB, the tape is mounted in SL mode; updating the JFCB to BLP mode; reading from the tape VOL1 data, and for each stored file initiating by the HLLC: reading HDR1/2, content block-by-block; EOF1/2 of the file; organizing the VOL1, HDR1, HDR2, content, EOF1 and EOF2 in the object storage; and closing the tape, wherein said reading is performed without setting a JES of the mainframe to BLP mode, and said reading is performed without unmounting the tape after each file.

Abstract: An information processing device includes an acquiring unit, a shaping unit, and an integration unit. The acquiring unit is configured to acquire operation history information from plural systems, respectively. The shaping unit is configured to shape each operation history information acquired by the acquiring unit into operation history information in a unified format. The integration unit is configured to arrange and integrate the operation history information after being shaped by the shaping unit in chronological order.

Abstract: Log reader and parser sharing determination in a change data capture environment includes obtaining log record identifiers for a group of data consumers of transaction log file data in transaction log files, identifying a respective restart log position and current log position for each data consumer of the group of data consumers, determining transaction log file distances between the restart log positions and the current log positions of each of one or more pairs of data consumers, calculating resource costs for data consumers of each pair to share a log reader and log parser, determining whether to share a log reader and log parser between any two or more data consumers of the group, and performing processing based on the determining whether to share.

Abstract: Mechanisms are provided for integrating a legacy static data storage system with an event based data storage system. Catch-up logic generates, for pre-existing legacy data in the legacy static data storage system, catch-up events for integrating the legacy data in the event based data storage system. A trigger processor generates, at approximately a same time that the catch-up events are generated, triggered events in response to one or more database triggers of the event based data storage system being activated. Both the catch-up events and the one or more triggered events are stored in an event log data structure. An event log monitor processes the catch-up events in the event log data structure to integrate the pre-existing legacy data into the event based data storage system. The event log monitor processes the one or more triggered events after all catch-up events in the event log data structure have been processed.

Abstract: Example embodiments relate to extract graph topology from a plurality of databases. The example disclosed herein access metadata from a plurality of distributed databases. The example further access a set of predetermined rules to transform the accessed metadata into a graph description schema. The example finalizes when the visualization of the graph description schema is built.

Abstract: A system optimizes performance of parallel queries by dividing a query into a plurality of sub queries. The query is divided according to a plurality of data ranges associated with the query. The system creates an available queue, and a defer queue. The system assigns the plurality of sub queries into the available queue. The system then processes, in parallel, the plurality of sub queries in the available queue. During the processing, if the system determines that a data range associated with a sub query comprises unavailable data, the system assigns the sub query to the defer queue as a defer range sub query. After completing the processing of the plurality of sub queries in the available queue, the system processes a plurality of defer range sub queries in the defer queue.

Abstract: Methods and apparatus are provided that are related to generating repair orders, including vehicular repair orders. A computing device can receive repair-related information associated with a repair order. The repair-related information can include information about a first repair attribute of one or more repair attributes. The computing device can determine a first ontology related to the first repair attribute. The first ontology can be further related to a first template. The computing device can determine modified repair-related information by at least utilizing the first template to modify at least a first portion of the repair-related information that includes the information about the first repair attribute. The computing device can generate an output related to the repair order that includes the modified repair-related information.

Abstract: A method for byzantine fault-tolerance replicating of data on a plurality of n servers includes performing a preprocessing procedure. The n servers include one primary node (PN) and n?1 backup nodes (BN), wherein f servers may arbitrarily fail, and wherein all n servers have a trusted computing entity (TCE). The preprocessing procedure is performed by the TCE of the PN and includes computing a random secret value for a unique, monotonic, sequential counter (UMSC) to be assigned with a request message for requesting an operation to be performed, computing a commitment for the random secret value and the UMSC, and splitting the random secret value into a plurality of shares. The preprocessing procedure further includes computing a server-specific authenticated encryption of each share, and providing the computed server-specific shares and the computed commitment to the respective servers.

Abstract: Methods, systems, and computer-readable storage media for data migration in an upgrade procedure executed on a software system include actions of initiating the upgrade procedure, determining a first set of tables of a source database that include data to be converted before being first written to a target database, converting data of the first set of tables to provide first converted data, and writing the converted data to one or more tables in the target database.

Abstract: A method including at least storing a plurality of identifiers and metadata associated with a plurality of integration actions. Each of the identifiers are associated with a readable object of a data source. Each of the integration actions are associated with one of the objects. The method including performing, during a first time period, the integration actions including creating objects, updating objects, or removing objects in a data target according to the corresponding objects of the data source. The method including performing, during a second time period, a discovery stage validation on readable objects of the data source and the data target to discover errors or uncertainties. The method also including performing, during a third time period, a re-validation related to the errors or uncertainties discovered in the discovery stage validation. The second and third time periods being independent of the first time period.

Abstract: Techniques herein generate, such as during compilation, polymorphic dispatch logic (PDL) to switch between specialized implementations of a polymorphic graph algorithm. In an embodiment, a computer detects, within source logic of a graph algorithm, that the algorithm processes an instance of a generic graph type. The computer generates several alternative implementations of the algorithm. Each implementation is specialized to process the graph instance as an instance of a respective graph subtype. The computer generates PDL that performs dynamic dispatch as follows. At runtime, the PDL receives a graph instance of the generic graph type. The PDL detects which particular graph subtype is the graph instance. The PDL then invokes whichever alternative implementation that is specialized to process the graph instance as an instance of the detected particular graph subtype. In embodiments, the source logic is expressed in a domain specific language (DSL), e.g. for analysis, traversal, or querying of graphs.

Abstract: A computer-implemented method of interacting with at least one data item includes storing, in a database system, a configuration, of each of the data items as a distinct information object, in which each information object has an association with a picture and a heading and/or a link to the corresponding data item. The method additionally uses the stored configurations to make available for display a representation of each of at least two of the information objects in a uniform format, wherein the format includes a card, and, within the card, at least the picture, a set of indicators, the set of indicators having at least one member, and a set of graphically accessible functions.

Abstract: Described embodiments provide systems and processes for performing a data replication process in a storage system. A current asynchronous replication cycle is initiated at a time-based interval based upon a replication policy of the storage system to replicate data from at least one source device to at least one target device. For the current asynchronous replication cycle, it is determined whether data stored on portions of the source device has changed from a previous asynchronous replication cycle. A new replica of the source device is generated if data stored on the source device has changed from the previous asynchronous replication cycle. The new replica is transferred to the target device. The current asynchronous replication cycle is completed and the replication policy of the storage system is satisfied without generating the new replica if data stored on the source device has not changed from the previous asynchronous replication cycle.

Abstract: A communication terminal includes an acquiring part that, when a data set including real data representing content of the data set and attribute data indicating an attribute of the real data is newly stored on a data storage device, acquires the attribute data from the data storage device without waiting for a user to instruct that the attribute data is to be acquired, and acquires the real data after the user instructs that the real data is to be acquired, and a notification controller that controls a notifying part to notify the user of the attribute indicated by the attribute data acquired by the acquiring part.

Abstract: A distributed database system (or federated database system) comprises a constituent database management system (DMBS), an accelerator system and a single interface. The accelerator system creates a data container in accordance with structural features identified by the accelerator system and stores data in the data container. The constituent database system supplements incomplete metadata associated with the data container to create complete metadata descriptive of the namespace and structure of the data container created by the accelerator system.

Abstract: The present invention provides a method of transferring content from a file and a database. In this case, the file includes content instances, each content instance being associated with a respective field, and each field having a respective type. The transfer is achieved by determining the type of each field, and then storing each content instance in a store in accordance with the determined field type of the associated field. Each content instance can then be transferred to the database in accordance with the determined field type. A similar procedure is provided for creating XML files based on content within the database.

Abstract: Methods, apparatus, and computer program products are provided. An example method comprises identifying an object in a source graph; defining a closure graph around the object in the source graph; building a closure set around the object based on the closure graph; identifying the anchor nodes of the closure set on the target graph; and deflating the closure set on the target graph to identify a target object in the target graph that corresponds to the object in the source graph. The object is identified by a directed way and an offset there along. An anchor node is a junction that is tagged with a junction identifier configured to uniquely identify the junction in both the source graph and a target graph.

Abstract: Methods and systems for ingesting data stored in a relational database into a non-relational delimited column qualifier NoSQL database are provided. According to certain aspects, an ingestion server may receive a request to transform the data stored in the relational database into a delimited column qualifier format. The ingestion server may then identify and query a reference table that defines the delimited column qualifier format. In accordance with the reference table, the ingestion server may transform the data into the delimited column qualifier format. Subsequently, the ingestion server may store the transformed data in the delimited column qualifier NoSQL database. By storing data in the column qualifier database, fewer computer resources are used to store and access the same data that is stored in the relational database. Accordingly, all the transformed data is stored in a single delimited CQ row.

Abstract: An approach is provided to determine one or more dynamic ordered tree structures and transition tree structures (e.g., based on one or more transitions of a device) to facilitate querying and/or accessing data stores. An apparatus and method determines to generate at least one index structure, determines to associate index objects of the generated index structure with one or more data objects of at least one data store, determines to generate at least one transition index structure based on the at least one generated index structure, and determines to associate the transition index structure with index objects corresponding to one or more data objects of at least one data store based on a transition of a device. Also, the method and apparatus determines to generate at least one query, and determines to generate at least one transition index structure where a current index structure to resolve the query is absent.

Abstract: A device may participate in a shared data state in which editing operations performed locally are distributed and synchronized with other devices participating in the shared data state. Data may be maintained in log-structured storage files on each device. Changes made locally may be represented by change descriptors conditionally appended to the end of a log. The size of the log may be monotonically increasing. Monotonically increasing identifiers may be used to implicitly or explicitly identify change descriptors. Upon conflict resolution, conditionally appended change descriptors may be committed. Non-committed change descriptors may be conditionally reappended to the end of the log for further conflict resolution.

Abstract: Embodiments of the present invention disclose a method, computer program product, and system for optimizing spatial queries, the method comprising a computer receiving a spatial data set, and a target spatial shape. The computer determining a distribution data set which aligns with the geometry of the spatial data set. The computer performing a query to determine a list of full and partial shapes of the spatial data set located within the target spatial shape. The computer determining a ratio for a determined partial shape of the spatial data set using the distribution data set. The computer determining an apportioned value of a variable of the spatial data set within the determined partial shape. The computer summarizing into a result set the value of the variable within the determined list of full and partial shapes of the spatial data set.

Abstract: A data storage array may be made up of several storage devices, each of which may contain array metadata that may allow portions of the storage array to be used. A system may have a file system manager that may receive and respond to file system commands and a storage device manager that may store data on the several storage devices. Array metadata defining where data is stored within the storage array is stored on each device within the array. A policy engine may identify data to be stored on the array and determine if the data contains array metadata or other types of data and may store the data on every device, devices having specific characteristics, two or more devices, or one device.

Abstract: Techniques for providing data preview before recalling large data files are disclosed. In one aspect, a data file is made accessible while being offline by converting the data file from a native format to a preview format, storing the data file in the preview format in a primary storage that is locally available and moving, after the conversion to the preview format, the data file in the native format to a secondary storage. When a viewing request is received for the data file, the data file in the preview format is displayed to fulfill the viewing request.

Abstract: Embodiments of the present invention provide a method, system and computer program product for consistent replication of transactional updates. In an embodiment of the invention, a method for consistent replication of data in a transaction processing system is provided. The method includes recording entries in a replication log of different data updates and corresponding transactions and additionally recording entries in the replication log indicating whether or not the transactions have been backed out. The method also includes replicating only those data updates referenced in the log which do not correspond to transactions indicated in the log to have been backed out. For instance the additionally recorded entries in the replication log indicate when a transaction has been backed out. Alternatively, the additionally recorded entries in the replication log indicate when a transaction has been committed.

Abstract: A repartitioning optimizer identifies alternative repartitioning strategies and selects optimal ones, accounting for network transfer utilization and partition sizes in addition to traditional metrics. If prior partitioning was hash-based, the repartitioning optimizer can determine whether a hash-based repartitioning can result in not every computing device providing data to every other computing device. If prior partitioning was range-based, the repartitioning optimizer can determine whether a range-based repartitioning can generate similarly sized output partitions while aligning input and output partition boundaries, increasing the number of computing devices that do not provide data to every other computing device. Individual computing devices, as they are performing a repartitioning, assign a repartitioning index to each individual data element, which represents the computing device to which such a data element is destined.

Abstract: An electronic device with one or more processors, memory and a display obtains information that enables distribution of content to a plurality of clients having different file format processing capabilities. The device provides, to a first client, first information that enables access to respective content in a first file format and provides, to a second client, second information that enables access to the respective content in a second file format different from the first file format. The first information identifies a first set of file portions that can be combined to generate the respective content in the first file format. The second information identifies a second set of file portions that can be combined to generate the respective content in the second file format. The second set of file portions includes one or more shared file portions that are included in the first set of file portions.

Abstract: A method and system for translating data to be migrated from an older legacy database to a newer recipient database. Legacy data elements in the older legacy database are translated to correspond the one or more recipient data elements in the newer recipient database by utilizing a translation table in the older legacy database. The translation table defines recipient data elements in the newer recipient database based upon metadata of the older legacy database. The metadata of the older legacy database describes legacy data fields in the older legacy database. The older legacy database utilizes a first operating system. The newer recipient database utilizes a second operating system that differs from the first operating system. The legacy data elements translated in the older legacy database are used to migrate the legacy data elements translated from the older legacy database to the newer recipient database.

Abstract: Embodiments of a method and apparatus for replicating a process performed on a first computer on a remote computer, particularly for the replication of a database maintained of each of the computers. An offset is added to time stamps for a sequence of commands so that a correction in a command or data associated with the command that is subsequently received before the command is executed can be implemented. The correction can result in removing the command from the sequence of commands to be performed, changing the data associated with the command or delaying execution of the command, for example.

Abstract: System and method for the opportunistic allocation of copies of data across data storage resources in file systems. Embodiments may opportunistically and transparently trade storage space in a file system for performance. In embodiments, when data is stored to the file system, copies of the data may be opportunistically stored to two or more data storage resources. The data may then be opportunistically accessed from a less active resource if the resource storing a primary copy of the data is busy. The opportunistically stored copies of data remain online in the file system. In hierarchical file systems or tiered storage hierarchies, embodiments may allow higher-level storage tiers to “borrow” performance from lower-level tiers by opportunistically allocating copies of data from a higher-level tier within a lower-level tier. Copies of data stored on a data storage resource may be deleted if storage space is needed on that data storage resource.

Abstract: Methods and apparatus for receiving uploaded data from a sender at a receiver. A data deduplication technique is described that may reduce the bandwidth used in uploading data from the sender to the receiver. In the technique, the receiver, rather than the sender, maintains a fingerprint dictionary for previously uploaded data. When a sender has additional data to be uploaded, the sender extracts fingerprints for units of the data and sends the fingerprints to the receiver. The receiver checks its fingerprint dictionary to determine the data units to be uploaded and notifies the sender of the identified units, which then sends the identified units of data to the receiver. The technique may, for example, be applied in virtualized data store systems to reduce bandwidth usage in uploading data.

Abstract: A system for managing email attachments receives and opens, on a mobile device, a document attached to an email; converts the opened document to a lower-resolution document; stores the lower-resolution document; and synchronizes the stored lower-resolution document with the mobile device. The system can also generate and store a corresponding thumbnail of the lower-resolution document. The original of the opened document may be stored in a remote storage device, optionally encrypting the low-resolution document before storing. The original of the opened document may also be broken into a plurality of pieces which are stored in different remote storage devices.

Abstract: Multi-dimensional surrogation systems and methods are provided that generate at least one up-to-date data surrogate using information of data and numerous data changes received from at least one data source, including a production system. Embodiments described further perform bulk-to-brick transformation of the up-to-date data surrogate. Brick-level data, or item data, is further indexed and stored in an application-aware manner. The stored item data is easily accessible by many data management applications for integrated item search and recovery functions, audit functions, monitoring and supervision functions, legal discovery functions, compliance functions, archival functions, backup functions, disaster recovery functions, and more. Bulk-to-brick transformation and access of the stored item data occur off of the production system, thus contributing no performance degradation to the production system.

Abstract: An adaptive data replication and caching system configured for deployment at the network edge. This system can include a data caching system configured to cache application data in a data store and to satisfy queries for application data from the cache. The system also can include a data replication system configured to replicate application data in the data store and to satisfy queries for application data against the replicated application data. Finally, the adaptive data replication and caching system can include a configurator for configuring portions of the data store for exclusive use by the data caching system and the data replication system.

Abstract: Provided are techniques for processing a multidimensional query. For each multidimensional expression in the multidimensional query, the multidimensional expression is evaluated to generate a representation that includes an evaluation context, a degeneration status, and condensed value storage that does not store data that would be replicated due to degeneration, and the representation is stored.

Abstract: A system and method for facilitating execution of one or more data integration projects in multiple environments or an environment that undergoes changes. Each project has a set of project parameters, which are bound to environment variables. Each environment has a corresponding environment representation with environment variables and corresponding values. Each project is mapped to an environment representation. Values of environment variables are provided to projects with corresponding parameters. When one or more projects are changed to a different environment with a different corresponding environment representation, the environment variable values of the new environment representation are provided to the projects. When an environment change is reflected in the environment representation, the changed variable values are provided to mapped projects.

Abstract: Embodiments of the present invention provide a method, system and computer program product for consistent replication of transactional updates. In an embodiment of the invention, a method for consistent replication of data in a transaction processing system is provided. The method includes recording entries in a replication log of different data updates and corresponding transactions and additionally recording entries in the replication log indicating whether or not the transactions have been backed out. The method also includes replicating only those data updates referenced in the log which do not correspond to transactions indicated in the log to have been backed out. For instance the additionally recorded entries in the replication log indicate when a transaction has been backed out. Alternatively, the additionally recorded entries in the replication log indicate when a transaction has been committed.

Abstract: A data management unit stores therein configuration items including attribute items described according to different schemas. A dictionary candidate retrieval unit specifies a combination of a pair of attribute items, which defines a correspondence relation between the attribute items of the different schemas, as a dictionary definition item, and retrieves, as a dictionary candidate, a combination of the attribute names corresponding to the same attribute value in the attribute items, which are described according to the schemas, of the dictionary definition item from the data management unit. A dictionary generation unit generates dictionary information defining synonymity between the attribute names of the different attribute items described according to the different schemas based on the dictionary candidate retrieved by the dictionary candidate retrieval unit. A dictionary management unit stores therein the dictionary information generated by the dictionary generation unit.

Abstract: Techniques are provided to allow users to define a global service that is offered across multiple replicated databases. Database clients connect to and use a global service just as they do with regular services on a single database today. Upon receiving a connection request, a collection of components, referred to collectively as the Global Data Service framework (GDS framework), automatically chooses the best database server instances to which to connect a client. Once those connections have been established, the clients determine which database server instance, of those database server instances to which they are connected, to send requests to based, at least in part, on advisory messages sent to the clients by the GDS framework.

Abstract: An on-disk structure of a file system has the capability to efficiently manage and organize data containers, such as snapshots, stored on a storage system. A multi-bit, monotonically increasing, snapshot identifier (“snapid”) is provided that represents a snapshot and that increases every time a snapshot is generated for a volume of the storage system. The snapid facilitates organization of snapshot metadata within, e.g., a data structure used to organize metadata associated with snapshot data. In the illustrative embodiment, the data structure is a balanced tree structure configured to index the copy-out snapshot data blocks. The snapid is also used to determine which blocks belong to which snapshots. To that end, every block that is used in a snapshot has an associated “valid-to” snapid denoting the newest snapshot for which the block is valid. The oldest snapshot for which the block is valid is one greater than the valid-to field of the next older block at the same file block number.

Abstract: Provided are a migration apparatus and method for converting a database of a mainframe system into an appropriate database for an open system. The migration apparatus includes: a data extraction module connected with a database of the mainframe system and extracting data composed of Extended Binary Coded Decimal Interchange Code (EBCDIC) in binary format; a code conversion module converting the extracted EBCDIC data into American Standard Code for Information Interchange (ASCII) code, full-width characters being converted into half-width characters corresponding to ASCII code using a previously set full-width/half-width conversion table; and a data transfer module transferring the data converted into ASCII code to store it in a database previously built in the open system to correspond to the database of the mainframe system. The migration apparatus and method efficiently reuse a conventionally used database via the rehosting process of converting a mainframe system into an open system.

Abstract: The technique introduced here involves using a block address and a corresponding generation number as a “fingerprint” to uniquely identify a sequence of data within a given storage domain. Each block address has an associated generation number which indicates the number of times that data at that block address has been modified. This technique can be employed, for example, to determine whether a given storage server already has the data, and to avoid sending the data to that storage server over a network if it already has the data. It can also be employed to maintain cache coherency among multiple storage nodes.

Abstract: A fault-tolerant node for synchronous heterogeneous database replication and a method for performing a synchronous heterogenous database replication at such a node are provided. A processor executes a computer program to generate a series of database transactions to be carried out at the fault-tolerant node. The fault-tolerant node comprises at least two relational database management systems, each of which are different relational database management system products, each implementing snapshot isolation between concurrent transactions. Each system comprises a database and a database management component. For each database transaction, operation instructions are provided concurrently to each of the systems to carry out operations on their respective databases and to provide respective responses. The responses generated by the systems either comprise an operation result or an exception.

Abstract: A data migration method includes retrieving data having a first data format that is associated with a first system, and generating at least one logical command that is configured to be interpreted by a migration utility. The logical command is translated to one or more equivalent physical commands that are executable by the second system, and is provided to the second system to recreate the data in accordance with a second data format that is associated with the second system. The command can be provided to the second system for execution thereby to define a system state in the second system that is equivalent to a system state of the first system with respect to the data having the first data format.

Abstract: To synchronize databases between disparate data processing environments, a buffer, which is part of a first data processing environment having a first database, is loaded with a database update. Loading the buffer does not commit the database update to the first database in the first data processing environment. A remote function is called in the first data processing environment to apply the database update to a second database in a disparate second data processing environment. In response to the remote function determining that the second database has been successfully updated with the database update, the database update is committed to the first database. In response to the remote function determining that the second database has not been successfully updated with the database update, the database update is rolled back in the buffer such that the first data processing environment is unaware of an attempted update to the first database.

Abstract: A first directory server computer system subscribes to update data published by directory servers via an advanced message queuing protocol (AMQP) server. The first directory server receives update data that indicates an update for a LDAP-based database associated with the first directory server. When the received update data is from the AMQP server, the first directory server converts the received update data into an LDAP data format and updates the LDAP-based database using the LDAP formatted update data. When the received update data is not from the AMQP server, the first directory server updates the LDAP-based database using the received update data, converts the received update data into a wire level data format, and publishes the wire level formatted update data to the AMQP server. The AMQP server allows a second directory server that subscribes to the AMQP server to obtain data representing the update.

Abstract: A method of making a foreign law in usable in a network storage controller includes transparently converting the foreign logical unit to the native format of the file system in place, by progressively increasing the binding between the file system of the storage controller and the foreign logical unit, while the foreign logical unit remains online, without requiring copying of the foreign logical unit.

Abstract: Techniques for replicating data chunks in a storage system are described herein. In one embodiment, in response to a request for replicating data chunks of a source storage system having a first average chunk size to a target storage system having a second average chunk size, a new chunk size is determined based on metadata of the data chunks in view of an average chunk size of the target storage system. The data chunks are resized based on the new chunk size to generate resized data chunks. The resized data chunks are transmitted from the source storage system to the target storage system for replication.

Abstract: An apparatus performs a data migration from a database of a mainframe system to a rehosting solution database of an open system. An unload data set conversion module converts an unload data set, unloaded from the database of the mainframe system, into load files having standard format. A schema information generation module generates a schema information file having conversion rules by segment and field necessary for code system conversion of segment data in the load files having standard format. A code system conversion module converts the load files into load files having a code system of the open system pursuant to the schema information file, wherein the load files. A data load module sequentially reads segment data in the code-converted load files to load the segment data into the rehosting solution database.