Which one of the following statements is / are true about SQL?

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Question:
Which one of the following statements is / are true about SQL?

1.SQL permits attribute names to be repeated in the same relation

2.If there are no indexes on the relations then an SQL query will not work

3.Duplicates are automatically eliminated by an SQL query

4.None of the above

Posted Date:-2022-11-11 15:04:29

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