Q: 85 Which view should a user query to display the columns associated with the
constraints on a table owned by the user?
A. USER_CONSTRAINTS
B. USER_OBJECTS
C. ALL_CONSTRAINTS
D. USER_CONS_COLUMNS
E. USER_COLUMNS
Answer: D
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什么问题？
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题目问的是哪个视图可以让你查询到与表上的约束相关的列。