单选题A UDT is a data type which:（）A must contain unique values.B cannot be CAST to other data types.C is created using the CREATE DISTINCT command.D contains a value that was automatically calculated from values in other columns.

题目

单选题

A UDT is a data type which:（）

must contain unique values.

cannot be CAST to other data types.

is created using the CREATE DISTINCT command.

contains a value that was automatically calculated from values in other columns.

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第7题：

A UDT is a data type which:（）

A、must contain unique values.
B、cannot be CAST to other data types.
C、is created using the CREATE DISTINCT command.
D、contains a value that was automatically calculated from values in other columns.

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A UDT is a data type which:（）

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