What is the purpose of the IMS DB secondary index? - IMS DB Quiz

IMS DB - Quiz(MCQ)

What is the purpose of the IMS DB secondary index?

A)

To store backup copies of database records

B)

To provide additional security for the database

C)

To improve the performance of database searches

D)

None of the above

Correct Answer : To improve the performance of database searches

Explanation : A secondary index is a data structure that is created to improve the performance of database searches by providing an alternative access path to the data. It is based on one or more fields in the database record, and is used to quickly locate records that match a particular search criteria.

Recently Updated in IMS DB Questions

Which parameter specifies the language in which the application program is written in PSBGEN?

A)

WRITE

B)

LANG

C)

PSBNAME

D)

LANGUAGE

Correct Answer : LANG

Explanation : The LANG parameter specifies the language in which the application program is written, e.g., COBOL.

What is a VSAM (Virtual Storage Access Method) dataset in an IMS DB system?

A)

A file that contains the database records

B)

A file that contains the structure of the database

C)

A program that is used to retrieve information from the database

D)

None of the above

Correct Answer : A file that contains the database records

Explanation : In an IMS DB system, a VSAM (Virtual Storage Access Method) dataset is a file that contains the database records. It is used to store the data for the database.

The first 8 bytes of unqualified SSA holds ______.

A)

White spaces

B)

The segment category which is being used for processing

C)

The segment name which is being used for processing.

D)

None of the above

Correct Answer : The segment name which is being used for processing.

Explanation : The first 8 bytes of unqualified SSA holds the segment name which is being used for processing.

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