Christina Marie Lee - San Jose CA Robert William Lyle - San Jose CA Stephen J. Schmandt - Portola Valley CA Hsiao Ming Wang - San Jose CA Yufen Wang - Saratoga CA
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 1730
US Classification:
707100
Abstract:
A method, apparatus, article of manufacture, and a memory structure for configuring a database management system to operate with multiple key versions is disclosed. The method comprises the steps of storing first key information comprising a first key format and an associated version indicator, when a command altering the key format is accepted, storing altered key information comprising the altered key format and the incremented version indicator in the index page set, and storing altered key information in an index catalog. The apparatus comprises a means for performing the above-entitled operations, and the article of manufacture comprises a program storage device tangibly embodying instructions for performing the operations.
Self-Describing Multiple Key Format Database Index
Christina Marie Lee - San Jose CA Robert William Lyle - San Jose CA Hsiao Ming Wang - San Jose CA
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 1730
US Classification:
707100
Abstract:
A method, apparatus, article of manufacture, and a memory structure for configuring a database management system to operate with multiple key versions is disclosed. The method comprises the steps of accessing key information comprising self-describing key data and an associated version indicator, generating key conversion/comparison information from the accessed key information, and storing the key conversion/comparison information in a memory accessible to the database management system. The apparatus comprises a means for performing the above-entitled operations, and the article of manufacture comprises a program storage device tangibly embodying instructions for performing the operations.