IMS DB Interview Preparation Guide
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IBM Information Management System (IMS) is a joint hierarchical database and information management system with extensive transaction processing capabilities.

37 IMS DB Questions and Answers:

1 :: What is an IMS Database?

A Database is a collection of related data items organized in a way that can be processed by application programs.
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2 :: What is DBMS in IMS?

A Database Management System is used to define and maintain the structure of the database.
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3 :: What are the objectives of DBMS in IMS?

► Increases data independence
► Reduces data redundancy
► Provides data communication facilities
► Reduces data maintenance
► Provides data integrity and security
► Provides indexing capabilities
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4 :: What is IMS (DB/DC)?

IMS (Information Management System) is IBM’s hierarchical database management system. It has mainly two components: IMS DB and IMS DC (also know as IMS TM)

IMS DB - IMS/Database Manager as the name implies manages the IMS databases. It is used for physical storage creation and management and data retrieval.

IMS DC / IMS TM - IMS/Data Communications or IMS/Transaction Manager handles online transaction processing system.
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5 :: What do you mean by Hierarchical Database?

► Follows inverted tree structure
► Data relationship is predefined by it's structure
► Program accesses the data through predefined paths.
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