user-defined data type
- Last UpdatedMar 09, 2016
- 1 minute read
A user-defined data type is the definition of a type of data and is created by a user. User-defined data types exist in addition to predefined system data types. The type of data that can be stored in a column of a database table is determined by the data type defined for that column. Defaults and rules only apply to user-defined data types, not system data types.