中国大学MOOC: Which of the following is WRONG in the relation rules?
Two tuples can be identical in all column values.
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?
内容
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中国大学MOOC: Which of the following language rules is not suitable when making a self-introduction?
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中国大学MOOC: Which one is wrong in the following statements about application letters?
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中国大学MOOC: The following sentences that have the relation of entailment are .
- 3
中国大学MOOC: The following sentences that have the relation of presupposition are _________________ .
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中国大学MOOC: Which statement of quotation is wrong?