An Introduction to IMS: Your Complete Guide to IBM by Barbara Klein, Richard Alan Long, Kenneth Ray Blackman,

By Barbara Klein, Richard Alan Long, Kenneth Ray Blackman, Diane Lynne Goff, Stephen Paul Nathan, Moira McFadden Lanyi, Margaret M. Wilson, John Butterweck, Sandra L. Sherrill

IBM’s Definitive One-Stop consultant to IMS types 12, eleven, and 10: for each IMS DBA, Developer, and method Programmer

 

Over ninety% of the head Fortune® a thousand businesses depend on IBM’s details administration method (IMS) for his or her most important IBM procedure z® facts administration wishes: 50,000,000,000+ transactions run via IMS databases on a daily basis. What’s extra, IBM maintains to improve IMS: types 12, eleven, and 10 meet today’s enterprise demanding situations extra flexibly and at a lower price than ever earlier than. In An creation to IMS, moment Edition, prime IBM specialists current the definitive technical creation to those types of IMS.

More than an entire instructional, this e-book offers updated examples, circumstances, difficulties, ideas, and an entire word list of IMS terminology. Prerequisite studying for the present IBM IMS Mastery Certification application, it displays significant contemporary improvements similar to dynamic info iteration; new entry, interoperability and improvement instruments; superior SOA aid; and masses extra. no matter if you’re a DBA, database developer, or method programmer, it brings jointly the entire wisdom you’ll have to be triumphant with IMS in today’s project severe environments.

 

Coverage includes

 

  • What IMS is, the way it works, the way it has developed, and the way it matches into smooth company IT architectures
  • Providing safe entry to IMS through IMS-managed program programs
  • Understanding how IMS and z/OS® interact to take advantage of and software program extra efficiently
  • Setting up, operating, and keeping IMS
  • Running IMS Database supervisor: utilizing the IMS Hierarchical Database version, sharing facts, and reorganizing databases
  • Understanding, using, and optimizing IMS Transaction Manager
  • IMS program improvement: program programming for the IMS Database and IMS Transaction Managers, enhancing and formatting messages, and programming functions in Java™
  • IMS method management: the IMS approach definition approach, customizing IMS, protection, logging, IMS operations, database and approach restoration, and more
  • IMS in Parallel Sysplex® environments: making sure excessive availability, supplying sufficient means, and balancing workloads

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Extra resources for An Introduction to IMS: Your Complete Guide to IBM Information Management System

Sample text

Maintain the databases. IMS DB provides facilities for backing up and recovering IMS databases, as well as facilities for tuning the databases by reorganizing and restructuring them. In addition, IMS DB enables you to adapt IMS databases to the requirements of varied applications. Application programs can access common (and therefore consistent) data, thereby reducing the need to maintain the same data in multiple ways in separate files for different applications. IMS databases are accessed internally using a number of IMS database organization access methods.

For example, you can define transactions for high-volume data-entry applications, others for interactive applications, and still others to support predefined queries. 舡 IMS System Services IMS System Services provide the following services to both IMS DB and IMS TM: 舦 Data integrity 舦 Restart and recovery of IMS after normal shutdown and failures 舦 Security, by controlling access to and modification of IMS resources 舦 Application program management by dispatching work, loading application programs, and providing locking services 舦 Diagnostic and performance information 舦 Facilities for operating IMS 舦 Interfaces to other z/OS subsystems that communicate with IMS applications The IMS System Services are accessed by doing the following: 舦 Issuing IMS commands 舦 Running IMS-supplied utility programs 舦 Running IMS-supplied or user-written exit routines 舦 Defining the services that you want as part of the system definition process IMS Product Documentation The primary resource for IMS product documentation is the IMS Information Center on the web.

Margaret Wilson, now retired from IBM, spent more than 20 years of her IBM career working with IMS and IMS Tools, testing IMS software, teaching IMS basics, and marketing IMS Tools. 舦 Moira McFadden Lanyi has been the Technical Editor, Terminologist, and Information Architect for the IMS Information Development team since 2003, and has also worked as a Visual Designer and Project Manager at IBM. 舦 Rick Long, IMS Development Level 2 Database Support Team member since 2002, began with IMS in the late 1970s working in various programming and database administration roles.

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