中国大学MOOC: Which of the following is WRONG in the relation rules?
举一反三
- Which of the following is WRONG in the relation rules? A: There is no order on the rows. B: There is no order on the columns. C: Two tuples can be identical in all column values. D: Multi-valued attributes are not permitted.
- Which of the following is WRONG in the relation rules? A: There is no order on the rows. B: There is no order on the columns. C: Two tuples cannot be identical in all column values. D: Multi-valued attributes are permitted.
- 中国大学MOOC: Which of the following is wrong about weight loss? ( )
- 中国大学MOOC: Which of the following comments on Charles Dickens is wrong?
- 中国大学MOOC: Which of the following statements concerning object-oriented analysis is wrong?