Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2005-12-22
2009-06-02
Ali, Mohammad (Department: 2169)
Data processing: database and file management or data structures
Database design
Data structure types
Reexamination Certificate
active
07543004
ABSTRACT:
Evaluation of workspace-local queries on a repository that supports versioning is enabled by tracking which versions of resources that are stored in the repository are associated with particular workspaces. A mapping is created and maintained for each workspace and each workspace-enabled table, i.e., a repository table that supports multiple versions of resources in the table. The mapping, such as a bit vector, is indexed by resource identifier. A set bit indicates that a particular resource version that corresponds to the bit is associated with the particular workspace. Therefore, the mapping indicates which rows in the workspace-enabled table are in the particular workspace. Index-based and functional evaluation schemes may utilize the per workspace, per table mapping to evaluate queries on the versioned repository. A new operator (IN_WORKSPACE) is introduced, through which an evaluation routine is invoked to determine whether or not a particular row maps to a particular workspace.
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Agarwal Nipun
Baby Thomas
Idicula Sam
Kapoor Vikram
Sedlar Eric
Ali Mohammad
Hasan Syed H
Hickman Palermo & Truong & Becker LLP
Oracle International Corporation
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