Q. The _______ function allows substitution of values in an attribute of a tuple

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Q. Which of the following OLAP systems do not exist?

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Q. State true or false: OLAP systems can be implemented as client-server systems

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Q. The operation of moving from coarser granular data to finer granular data is called _______

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Q. State true or false: In OLAP, analysts cannot view a dimension in different levels of detail.

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Q. Which of the following is not a relational algebra function?

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Q. The select operation’s function in relational algebra is identical to the _______ clause in SQL

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Q. The project operation’s function in relational algebra is identical to the _______ clause in SQL

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Q. What does the following relational operation perform?
ρx(A1,A2,A3…) (E)

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Q. What does the following relational algebra expression do?
σamount > 1200 (loan)

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Q. How is the left outer join symbol represented in relational algebra?

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Q. How is the right outer join symbol represented in relational algebra?

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Q. Πcustomer_name, loan_number, amount (borrower ⋈loan)

What does the above expression perform?

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Q. Updating, Deleting and Inserting in relational algebra is done using the ________ operator

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Q. State true or false: There exists a division operator in Relational Algebra

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Q. The collections on which aggregate functions can operate are called as __________

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Q. A join of the form r ⨝r.A=s.B s is called as

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Q. If nested loop join is done on a per block basis rather than on a per tuple basis, it is called as

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Q. The merge join can be used to compute

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Q. The ___________ merges the sorted relation with leaf entries of the secondary B+ tree index.

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