Metadata classes
Meta-information is provided via following definition classes:
- TypeDefinition - provides type definitions for complex data types, keys and enumerations
- PropertyDefinition - provides property definitions for extents or properties in a complex data type
- EnumeratorDefinition - provides enumerator definition for enumerators in an enumeration
- IndexDefinition - provides access key definitions for collections
Meta-information can be read directly from the dictionary database, but in order to improve performance, meta-information is copied into main storage and run-time information is added to internal meta-information.
Internal meta-information objects canbe read, but not updated. In order to update meta-information (schema and related resources), metadata has to be accessed directly via property handles opened for the dictionary.
Subtopics
- TypeDefinition - Type definition
- EnumeratorDefinition - Enumerator instance (category)
- PropertyDefinition - Property definition
- SDB_Index - Index definition