Abstract: There is provided a data management method for managing data stored in a parallel database system in which a plurality of data servers manage data. The parallel database system manages: correspondence information between a characteristic of the data and each of the plurality of data servers that manages the data; and a data area corresponding to the characteristic of the data. The data management method comprising the steps of: extracting the characteristic of the data from data to be stored in the data area; storing the data in the data area based on the extracted characteristic of the data; specifying a corresponding data area based on the characteristic of the data stored in the data area by referring to the correspondence information; and accessing, by each of the plurality of data servers, the specified data area.

Abstract: Configuration adjustment processing receives database configuration information and parameter adjustment policy information from an application. When database configuration information received from another application exists in DBMS, the configuration adjustment processing reads in the database configuration information and makes adjustment of the inputted database configuration information and the existing database configuration information in accordance with the parameter adjustment policy information. The configuration adjustment processing updates the existing database configuration information on the basis of the adjusted database configuration information.

Abstract: An overhead passing processing circuit in a synchronous multiplex network, with a circuit for extracting predetermined administration and maintenance operating information from multiplexed signals, a crossconnecting circuit for crossconnecting information extracted by the extraction circuit stage, and an insertion circuit for inserting an output of the crossconnecting circuit into a predetermined location in the overhead of the multiplexed signal to be transmitted.

Abstract: The present invention relates to a method for allocating volumes having a suitable physical location relationship based on a method of use of files by applications. When an application management unit receives an application area expansion request, a distribution request table is created based on a preset distribution rule table and a file management table. The distribution rule table includes a flag indicating whether or not files stored on a logical disk for allocation, and existing files, may be stored on the same disk drive. A storage management unit selects, in consideration of the distribution request table, a logical disk having suitable physical attributes from unused logical disks satisfying basic conditions such as requested size and RAID configuration. The selected logical disk is allocated to the application.

Abstract: A method for creating an index for searching a structured document having a document data-structure stored, in a computer. The method to be performed in the computer for creating an index includes the steps of: analyzing a structured document to extract a document data-structure in the structured document; normalizing the extracted document data-structure to create a logical structure index composed of a plurality of elements having a hierarchical structure; extracting an appearance number of each element in the created logical structure index; and extracting elements for creating the index, based on the logical structure index, by comparing the extracted element appearance number and a first predetermined threshold.

Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.

Abstract: An index renewing system includes an temporary accumulation area (112) for storing registration target data and an identifier for the data, and an index storage area (110) for storing an index, wherein an operation unit (102) of the index renewing system stores received registration target data and the identifier for the data into the temporary accumulation area (112), creates an index entry by extracting a data item matching any of predetermined data items from the registration target data stored in the temporary accumulation data, and creating index information (index data) containing the identifier corresponding to the index entry, and stores the created index entry and the corresponding index information as an index into an index storage area (110) on an index entry by index entry basis.

Abstract: A parallel database system retrieval method and system for transferring from database operation servers to a front end server only those data items that are used in subsequent processing, thereby shortening the query time when the unused data are massive. The invention allows an initial retrieval query to transfer only location information about the target data from a database operation server to the front end server. Using the location information the invention permits a subsequent query to get variable-bound location information so that the latter query will retrieve a desired sub-data item according to the acquired location information and dictionary information about the sub-data item locations within the data.

Abstract: A parallel database system retrieval method and system for transferring from database operation servers to a front end server only those data items that are used in subsequent processing, thereby shortening the query time when the unused data are massive. The invention allows an initial retrieval query to transfer only location information about the target data from a database operation server to the front end server. Using the location information the invention permits a subsequent query to get variable-bound location information so that the latter query will retrieve a desired sub-data item according to the acquired location information and dictionary information about the sub-data item locations within the data.

Abstract: To store data in an insertion process, a process 1 that inserts data into a new block and a process 2 that inserts, within the block reserved, data into areas that became free when data was deleted are prepared. A switching event to switch from the process 1 to the process 2 is designated in advance. The occurrence of the designated event is checked while executing the process 1 in an insertion process, and if the designated event occurs, the insertion process executes the process 2. If during the execution of the process 2, areas that can be reused become depleted, the execution of the insertion process reverts back to the process 1. As a result, free areas resulting from deletions can be reused according to the switching event designated.

Abstract: A rotation detecting apparatus for use in producing a photo film cassette has an opaque detecting dog device secured in a manner rotatable together with a rotatable inserter. A light source device applies collimated light flux to the detecting dog device. A detection hole is formed through the detecting dog device, for receiving application of the collimated light flux, and passing light through the detection hole when openings at ends thereof are aligned with one another in a direction of the collimated light flux. A photo receptor receives the passed light passed through the detection hole, and outputs a detection signal according to an amount of the received passed light. In the retention, a trailer of photo film is picked up by the inserter. The inserter is rotationally inserted through a passageway of the photo film cassette. The trailer is fastened on a trailer fastener of a spool.

Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.

Abstract: An optical transmission system accomplishes optical transmission over a long distance by combining a multiplexing line terminal with optical amplifiers, linear repeaters, and regenerators with optical amplifiers combined together. The system also accomplishes the optical transmission over a short distance by directly connecting the linear terminals therebetween, with an electric-to-optic converter replaced by an electric-to-optic converter having a semiconductor amplifier, with an optic-toelectric converter by an optic-to-electric converter having an avalanche photodiode as light receiver, and with no use of any optical booster amplifier and optical preamplifier in multiplexing line terminal. With these, the optical transmission system can be easily constructed depending on the transmission distance required.

Abstract: In a database management system constructing method of constructing a database management system including a plurality of information processing devices, there are provided a step of creating a definition file and storing the definition file into storage devices, and a step of delivering the stored definition file to each of the information processing devices via a communications device, the information processing devices configuring the database management system.

Abstract: When a trigger and a method for changing partition definition information have been defined, a DBMS monitors the occurrence of the trigger. When the occurrence of the trigger is detected, a specified partition change is executed automatically. When the partition change is executed, migrations of data among storage areas are executed in parallel as long as the migration source storage area and the migration destination storage area of one piece of the data do not overlap those of another piece of the data.

Abstract: The present invention relates to a method for allocating volumes having a suitable physical location relationship based on a method of use of files by applications. When an application management unit receives an application area expansion request, a distribution request table is created based on a preset distribution rule table and a file management table. The distribution rule table includes a flag indicating whether or not files stored on a logical disk for allocation, and existing files, may be stored on the same disk drive. A storage management unit selects, in consideration of the distribution request table, a logical disk having suitable physical attributes from unused logical disks satisfying basic conditions such as requested size and RAID configuration. The selected logical disk is allocated to the application.

Abstract: In a storage management system for managing a storage device for storing data, management information for managing the storage device, area assignment information for managing an area assignment state of the storage device, and history information for managing a history on area assuring and release are held. Further, an assignment request for temporarily using an area is received in association with designation of an area size and a using period. It is determined whether or not the requested area can be assigned by referring to information calculated from the held history information. An area with a designated size at a designated period is assigned to a request source if the area can be assigned as a result of the determination. In the determination, transition of a used amount of a storage is obtained from the history information, and it is determined based on the transition of the used amount of the storage whether or not the designated area can be assigned at the designated period.

Abstract: A method of eliminating disturbance of database storage areas is provided, which includes the steps of: checking if it is time to execute database storage status analysis; analyzing a state of database storage areas and outputting values corresponding to disturbance factors as a status analysis result; checking whether each of the disturbance factors has reached a state that requires to be eliminated; and referring to an association table matching disturbance resolution processing with factors to be eliminated by the processing and selecting appropriate processing that can eliminate the disturbance caused by the factor.

Abstract: A database system for storing table data as divided in a plurality of storages has a processing request acceptance section and an execution section which, at the time of rebalancing already stored data in response to addition of a storage, can execute inquiry operations concurrently. The system determines data to be moved from existing storages to the additional storage. When search, update and delete processing requests are issued during execution of the rebalance operation of copying the data to the additional storage and deleting the original data, both the DBMS acceptance section and DBMS executor section execute the operation corresponding to the requests. When an insert processing request is issued, the system determines a data insert destination on the basis of contents of a step of dividing the data from the existing storages to the additional storage.

Abstract: Configuration adjustment processing receives database configuration information and parameter adjustment policy information from an application. When database configuration information received from another application exists in DBMS, the configuration adjustment processing reads in the database configuration information and makes adjustment of the inputted database configuration information and the existing database configuration information in accordance with the parameter adjustment policy information. The configuration adjustment processing updates the existing database configuration information on the basis of the adjusted database configuration information.