Domain definitions typically specify some (or all)of the following characteristics of attributes: data type,length,format,range,allowable values,meaning,uniqueness,and null support (whether an attribute value may or may not be null).

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This statement is true. Domain definitions often include specifications for data type, length, format, range, allowable values, meaning, uniqueness, and null support.

Domain Definitions Typically Specify Some (Or All)of the Following Characteristics