CGlossary
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consistency, logical
State of the database in which the stored data has no inter nal conflicts and
reflects the real-world situation.
consistency, physical
State of the database in which the stored data is consistent with regard to
correct physical storage, access paths and description information.
consistency, storage
See physical consistency.
consistency error
A violation of the physical consistency of the stored data.
consistency point
Point (in time) at which the database is consistent, i.e. all modifying transaction
have been terminated and their modifications have been executed in the
database.
consistency record
Administration record with consistency time and date s tamps in the DBDIR. For
an update in a realm the DBH enters the date and time in the consistency record
and in the updated realm. When realms or databases ar e attached for a session,
the DBH uses this time stamp to check the consistency of the realms within
each database.
contending access
Different transactions attempting to access a page simultaneously.
conversation
SQL-specific administration data is retained acros s transaction boundaries in an
SQL application. This kind of data administration unit is ca lled a conversation. In
openUTM such an administrative unit is also called a ser vice.
copy
See database copy.
COSSD
See COBOL Subschema Directory.
CRA
(Current Record of Area) Record which is marked in the currency table as the
current record of a particular rea lm (area).