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A SELECT statement can be used to perform these three functions: 1. Choose rows from a table. 2. Choose columns from a table 3. Bring together data that is stored in different tables by creating a link between them. Which set of keywords describes these capabilities?()
- A、difference, projection, join
- B、selection, projection, join
- C、selection, intersection, join
- D、intersection, projection, join
- E、difference, projection, product
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更多 “ A SELECT statement can be used to perform these three functions: 1. Choose rows from a table. 2. Choose columns from a table 3. Bring together data that is stored in different tables by creating a link between them. Which set of keywords describes these capabilities?()A、difference, projection, joinB、selection, projection, joinC、selection, intersection, joinD、intersection, projection, joinE、difference, projection, product” 相关考题
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It can be used in subqueries contained only in a SELECT statement.C
It will return an error if the undo retention time is less than the lower bound time or SCN specified.D
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