Accommodation of data definition statements in the sharing...

Details Accommodation of data definition statements in the sharing... Accommodation of data definition statements in the sharing...

G - Physics

06

F

G06F 17/30 (2006.01) G06F 9/45 (2006.01) G11B 23/00 (2006.01)

Patent

CA 2293059

An SQL relational database management system which determines the shareable status of an executable object (section) in an SQL cache. The shareable status is defined for a section in an SQL cache by the system maintaining an identification list which has reference to database entities which are affected by a DDL statement in the current unit of work. When an SQL statement is compiled, the compiler generates a list of dependencies, which list is compared with the identification list. If the SQL statement data dependencies are on the identification list, the SQL statement will be treated as non-shareable until the completion of the current unit of work.

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