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An Introduction to IMS: Your Complete Guide to IBM Information Management System by Steve Nathan, Sandy Sherrill, Rick Long, Moira McFadden Lanyi, Margaret Wilson, Kenny Blackman, John Butterweck, Diane Goff, Barbara Klein

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Chapter 6. Overview of the IMS Database Manager

You can order and install the IMS Database Manager (IMS DB) with or without the IMS Transaction Manager (IMS TM).

In This Chapter

IMS Database Manager Overview

Implementation of IMS Databases

Storing Data in IMS and DB2 for z/OS

Storing XML Data in IMS

Open Database Manager

IMS Database Manager Overview

A database management system (DBMS) provides facilities for business application transactions or processes to access stored information. The role of a DBMS is to provide the following functions:

• Allow access to the data for multiple users from a single instance of the data.

• Control concurrent access to the data to maintain integrity for all updates.

• Minimize hardware device and operating ...

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