Abstract: According to embodiments of the present invention, machines, systems, computer-implemented methods and computer program products are provided for converting part or all of a document from an unstructured format into a structured format, and combining structured and unstructured data into an unstructured format. In some embodiments, documents are received in an unstructured format, and stored in a repository for querying (e.g., including updating and other operations (e.g., SQL SELECT, UPDATE, INSERT, DELETE, MERGE, etc.)). Responsive to detecting a predetermined number of the documents in an unstructured format stored in a repository for querying, an optimization criteria may be applied to identify one or more components of the stored documents for conversion, and the one or more components of the stored documents are converted from the unstructured format to a structured format.

Abstract: According to embodiments of the present invention, machines, systems, computer-implemented methods and computer program products are provided for converting part or all of a document from an unstructured format into a structured format, and combining structured and unstructured data into an unstructured format. In some embodiments, documents are received in an unstructured format, and stored in a repository for querying (e.g., including updating and other operations (e.g., SQL SELECT, UPDATE, INSERT, DELETE, MERGE, etc.)). Responsive to detecting a predetermined number of the documents in an unstructured format stored in a repository for querying, an optimization criteria may be applied to identify one or more components of the stored documents for conversion, and the one or more components of the stored documents are converted from the unstructured format to a structured format.

Abstract: Provided are techniques for building an undo log for in-memory blocks of data. Permission on a block of data in memory is set to prevent updates to that block of data using a memory protection function. In response to an update operation attempting to update the block of data in the memory, an interrupt with a location of the block of data is received, the block of data is copied to an undo log entry in an undo log, and the permission on the block of data in the memory is set to allow the update to that block of data to proceed using the memory protection function.

Abstract: Provided are techniques for building an undo log for in-memory blocks of data. Permission on a block of data in memory is set to prevent updates to that block of data using a memory protection function. In response to an update operation attempting to update the block of data in the memory, an interrupt with a location of the block of data is received, the block of data is copied to an undo log entry in an undo log, and the permission on the block of data in the memory is set to allow the update to that block of data to proceed using the memory protection function.

Abstract: According to embodiments of the present invention, machines, systems, computer-implemented methods and computer program products are provided for converting part or all of a document from an unstructured format into a structured format, and combining structured and unstructured data into an unstructured format. In some embodiments, documents are received in an unstructured format, and stored in a repository for querying (e.g., including updating and other operations (e.g., SQL SELECT, UPDATE, INSERT, DELETE, MERGE, etc.)). Responsive to detecting a predetermined number of the documents in an unstructured format stored in a repository for querying, an optimization criteria may be applied to identify one or more components of the stored documents for conversion, and the one or more components of the stored documents are converted from the unstructured format to a structured format.

Abstract: An approach is provided in which a sample point system allocates sample point identifiers to a root node included an index tree that includes multiple leaf nodes. The sample point system distributes the sample point identifiers to the root node's child nodes, and recursively traverses through the index tree's hierarchical index levels and distributes the sample point identifiers from the child nodes to a subset of the index tree's leaf nodes. In turn, the sample point system collects sample data from the subset of the plurality of leaf nodes corresponding to the distributed sample point identifiers.

Abstract: An approach is provided in which a sample point system allocates sample point identifiers to a root node included an index tree that includes multiple leaf nodes. The sample point system distributes the sample point identifiers to the root node's child nodes, and recursively traverses through the index tree's hierarchical index levels and distributes the sample point identifiers from the child nodes to a subset of the index tree's leaf nodes. In turn, the sample point system collects sample data from the subset of the plurality of leaf nodes corresponding to the distributed sample point identifiers.

Abstract: Provided are techniques for building an undo log for in-memory blocks of data. Permission on a block of data in memory is set to prevent updates to that block of data using a memory protection function. In response to an update operation attempting to update the block of data in the memory, an interrupt with a location of the block of data is received, the block of data is copied to an undo log entry in an undo log, and the permission on the block of data in the memory is set to allow the update to that block of data to proceed using the memory protection function.

Abstract: Provided are techniques for building an undo log for in-memory blocks of data. Permission on a block of data in memory is set to prevent updates to that block of data using a memory protection function. In response to an update operation attempting to update the block of data in the memory, an interrupt with a location of the block of data is received, the block of data is copied to an undo log entry in an undo log, and the permission on the block of data in the memory is set to allow the update to that block of data to proceed using the memory protection function.

Abstract: An approach is provided in which a sample point system allocates sample point identifiers to a root node included an index tree that includes multiple leaf nodes. The sample point system distributes the sample point identifiers to the root node's child nodes, and recursively traverses through the index tree's hierarchical index levels and distributes the sample point identifiers from the child nodes to a subset of the index tree's leaf nodes. In turn, the sample point system collects sample data from the subset of the plurality of leaf nodes corresponding to the distributed sample point identifiers.

Abstract: An approach is provided in which a sample point system allocates sample point identifiers to a root node included an index tree that includes multiple leaf nodes. The sample point system distributes the sample point identifiers to the root node's child nodes, and recursively traverses through the index tree's hierarchical index levels and distributes the sample point identifiers from the child nodes to a subset of the index tree's leaf nodes. In turn, the sample point system collects sample data from the subset of the plurality of leaf nodes corresponding to the distributed sample point identifiers.

Abstract: A log-shipping data replication system employs a primary server coupled to a standby server. In operation, the primary server concurrently flushes log data at the primary server and transmits the same log data from the primary server to the standby server. The primary server further transmits at least one buffer flush boundary indication to the standby server indicating the flushing status of the log data at the primary server. The standby server processes the log data as a function of receiving the log data from the primary server, and/or receiving the at least one buffer flush boundary indication from the primary server.

Abstract: A method and system are provided for providing a consistent reintegration of a failed primary instance as a new secondary instance with implementation of truncation of log records. Upon failure of a primary instance, a secondary instance may be reassigned as the new primary instance. Prior to reintegration, any portion of the database log of the failed primary that is after the log position of the new primary instance may be truncated, followed by a comparison of the log positions of both the new primary instance and the new secondary instance. In limited circumstances, the truncation of the log data generated by the failed primary instance after the point of failure is possible, and supports reintegration of the failed primary as a new secondary instance with limited overhead.

Abstract: A method and apparatus for providing efficient space utilization of WORM media while maintaining transactional consistency are disclosed. In response to a transaction, a binary large object (BLOB) associated with the transaction is stored on a staging area of a non-volatile storage medium. A determination is then made as to whether or not a rollback operation needs to be performed on the transaction. If a rollback operation needs not to be performed on the transaction, the BLOB is migrated from the staging area of the non-volatile storage medium to a WORM medium after the transaction has been committed.