Operating system and data base having an access structure formed by a plurality of tables
Patent 5594899 Issued on January 14, 1997. Estimated Expiration Date: 
December 1, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
December 1, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesData management system for efficiently searching data elements and having a flexible registration order of data elements Relational database system Complied objective referential constraints in a relational database having dual chain relationship descriptors linked in data record tables Patent #: 5133068 InventorsAssigneeApplicationNo. 347588 filed on 12/01/1994US Classes:707/2Access augmentation or optimizingExaminersPrimary: Kriess, Kevin A.Assistant: Chaki, Kakali Attorney, Agent or FirmInternational ClassG06F 017/30AbstractAn object access system for retrieving objects in response to requests identifying requested objects, the system comprising an access structure consisting of a plurality of tables where each table is identified by a unique table identifier and has a plurality of rows where each row has a plurality of fields and is identified by a unique primary key in one of the fields and where a field may also contain objects; a row index for each table, each row index having entries ordered on the primary key of the rows in the table where each entry points to a row of fields in the table; a table index ordered on the table identifier for the tables, the table index having an entry for each table which point to the row index for that table and access means, responsive to requests for an object having an associated table identifier and primary key, for searching the table index for the requested table identifier and for retrieving from the table index entry for the requested table identifier the pointer to the row index for the requested table identifier, searching the pointed to row index for the requested primary key and retrieving from the row index entry for the requested primary key the pointer to the row of fields and searching the pointed to row of field for the requested object and retrieving the requested object.Other References
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