Fujitsu UDS/SQL V2.5 사용자 설명서
B
Glossary
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U929-J-Z125-9-76
B
backup database
See shadow database.
base interface block (BIB)
(Base Interface Block) Standard interface between UDS/SQL and each
individual user; it contains, among other things, the RECORD AREA (user
records as defined in the subschema).
individual user; it contains, among other things, the RECORD AREA (user
records as defined in the subschema).
before-image
Copy of a page taken before its contents are updated.
The DBH writes before-images to the RLOG files during database operation
before the updates are applied to the database. A prerequisite is that the RLOG
files exist.
The DBH writes before-images to the RLOG files during database operation
before the updates are applied to the database. A prerequisite is that the RLOG
files exist.
BFIM
See before-image.
BIB
See base interface block.
buffer pool
See system buffer pools and exclusive buffer pool.
C
CALC key
Key
whose value is converted into a relative page number by means of a hash
routine
.
CALC page
Page
of a hash area.
CALC SEARCH key
Secondary key.
Used as access path for direct access via hash routine.