Database Systems Practice Test 77

Selection Operation in Query Processing Quiz Questions and Answers PDF - 77

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The Quiz: A3 search performs retrieval of multiple records by using a primary index specifying the; "Selection Operation in Query Processing" App Download (Free) with answers inequality comparison on a nonkey attribute, equality comparison on a key attribute, equality comparison on a nonkey attribute and inequality comparison on a key attribute for database administrator certification. Solve query processing questions and answers, Amazon eBook to download free sample for online computer engineering programs.

Selection Operation in Query Processing Questions and Answers PDF Download: Quiz 77

MCQ 381: A3 search performs retrieval of multiple records by using a primary index specifying the

A) Equality comparison on a key attribute

B) Inequality comparison on a nonkey attribute

C) Equality comparison on a nonkey attribute

D) Inequality comparison on a key attribute

MCQ 382: The process of transforming data into an unreadable form is known as

A) Encryption

B) Modulation

C) Theft

D) Forgery

MCQ 383: In an E-R diagram, the attributes of a relationship set is represented by

A) Circle

B) Square

C) Divided rectangle

D) Undivided rectangle

MCQ 384: We can choose the tuples to be updated by using a query, as we could for

A) Insert

B) Delete

C) Both A and B

D) Retrieval

MCQ 385: After turning off the automatic commit, transactions must be committed or rolled back explicitly using the method

A) conn.commit()

B) conn.setCommit()

C) conn.getCommit()

D) conn.setAuto()

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