Q. Which JDBC Driver is the most efficient of all the JDBC drivers?

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Q. Which package comprises of the core JDBC API?

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Q. What is the full form of OLAP?

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Q. Data that can be modelled as dimension attributes and measure attributes are called ___________

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Q. The operation of changing a dimensions used in a cross-tab is called as ________

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

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Q. How many dimensions of multi-dimensional data do cross tabs enable analysts to view?

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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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