# SYSKEYS

Describes the specific information for primary key and unique constraints within the current database. Derby generates an index on the table to back up each such constraint. The index name is the same as SYSKEYS.CONGLOMERATEID.

Column Name | Type | Length | Nullable | Contents
--- | --- | --- | --- | ---
CONSTRAINTID | CHAR | 36 | false | unique identifier for constraint
CONGLOMERATEID | CHAR | 36 | false | unique identifier for backing index

Parent topic: Derby System Tables
Related reference
SYSALIASES
SYSCHECKS
SYSCOLPERMS
SYSCOLUMNS
SYSCONGLOMERATES
SYSCONSTRAINTS
SYSDEPENDS
SYSFILES
SYSFOREIGNKEYS
SYSROUTINEPERMS
SYSSCHEMAS
SYSSTATISTICS
SYSSTATEMENTS
SYSTABLEPERMS
SYSTABLES
SYSTRIGGERS
SYSVIEWS