Database Management Systems (DBMS) GTU Chapter 2 Quiz

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Questions and Answers

What is the cost of linear search in the best case scenario?

(br * 2)
(br - 2)
(br / 2) (correct)
(2br)

When can linear search be applied according to the text?

Only if the selection is on the primary key attribute
When selection condition involves multiple comparisons
Only if the file is sorted on the primary key attribute
Regardless of selection condition or ordering of records (correct)

What is the cost of binary search as per the text?

[log(br) / 2]
[br / log2]
[log2(br)] (correct)
[log(br)]

In which scenario is binary search generally used?

When selection is an equality comparison on the primary key attribute and the file is ordered on the primary key attribute (A) Signup and view all the answers

How do we evaluate expressions with multiple operations according to the text?

By evaluating each operation one by one in appropriate order (D) Signup and view all the answers

What does 'br' represent in the context of cost calculation?

Number of blocks containing records from relation r (A) Signup and view all the answers

Which search algorithm is faster between linear search and binary search?

Binary search (C) Signup and view all the answers

What method is used for evaluating expressions with multiple operations from bottom to top?

Pipelining (C) Signup and view all the answers