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5 Answers

Best answer
18 votes
18 votes

To extract a specified row in a table we do select operation

To extract a specified column from a table we do project operation

Answer A)

selected by
2 votes
2 votes

Answer is Project

To choose a subset of columns in a relation Project operation is used

It is denoted as Π.

1 votes
1 votes
project is use to extract specified columns from a table it also eliminate dublicate .
Answer:

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