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Answers by pradeepchaudhary

1 votes
41
Uttrakhand Asst. Professor Exam-51
Which of the following operation of relational algebra, selects certain columns from the table and discards the other columns? SELECT PROJECT DIVISION None of the above
Which of the following operation of relational algebra, selects certain columns from the table and discards the other columns?SELECTPROJECTDIVISIONNone of the above
2 votes
42
Number of tables
What is minimum number of tables requires, to represent above ER diagram? (Does total participation and partial participation will take a role in this question)?
What is minimum number of tables requires, to represent above ER diagram?(Does total participation and partial participation will take a role in this question)?
0 votes
43
Normalization
0 votes
44
BCNF
Every BCNF decomposition is A)Dependency preserving B)not a dependency preserving C)Need not be dependency preserving D)None of the above
Every BCNF decomposition is A)Dependency preservingB)not a dependency preservingC)Need not be dependency preservingD)None of the above
0 votes
45
DBMS Relational Algebra
Which of the following Queries is more Efficient on the given data? 1. In terms of Space. 2. In terms of Calculation. also, How many calculations are necessary for Each?
Which of the following Queries is more Efficient on the given data?1. In terms of Space.2. In terms of Calculation. also, How many calculations are necessary for Each?
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