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SAP Sybase SQL Anywhere 16.0 » SQL Anywhere Server - SQL Usage » Data integrity » Entity and referential integrity


Referential integrity checking

For foreign keys defined to RESTRICT operations that would violate referential integrity, default checks occur at the time a statement executes. If you specify a CHECK ON COMMIT clause, then the checks occur only when the transaction is committed.

 Using a database option to control check time

Integrity checks on INSERT
Integrity checks on DELETE or UPDATE