Identifying key
Identifying keys are special keys, which provide instance access mechanisms (locating an instance by key value) and define an identifying role. Thus, identifying keys are usually instance identifiers within a certain instance collection. Keys, which uniquely identify an instance are called identifying key. Identifying keys are an alternative for several operations, which can operate on keys rather than on identities.
Generalisations: key, instance identifier
Related topics
- SDB_KeyComponent - Key component
- smceiksm - Identifying key for structure
- IDENT_KEY keyword
- Extent definitions
- Get type definition for identifying key
- Key definition