A UDT is a data type which:（）
- Amust contain unique values.
- Bcannot be CAST to other data types.
- Cis created using the CREATE DISTINCT command.
- Dcontains a value that was automatically calculated from values in other columns.
问题
A UDT is a data type which:（）
参考解析：
分类：IBM(000-730)题库
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