System for secondary database data block buffering with block sa

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395494, 364DIG1, 3642821, 3642813, 3642841, 3642842, G06F 1730

Patent

active

054695678

ABSTRACT:
The present invention is an improved database system for reducing the wait time for database processing programs. This data system provides for the input/output of blocks of data in excess of the capacity of the buffer pool assigned to the database processing program. When a database processing program tries to refer to the same block as one already under update processing by another database processing program or tries to update the same block as one already under update processing by another data processing program, the system allows a reference or update without placing the database processing system in the waiting state.

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patent: 5185887 (1993-02-01), Takahashi et al.
patent: 5247672 (1993-09-01), Mohan
patent: 5276835 (1994-01-01), Mohan et al.
patent: 5359713 (1994-10-01), Moran et al.

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