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IMS/DB programming

This course is designed, written and presented by Minerva Douglas, one of the UK's foremost IMS programming specialists. The course will provide the essential information that is required by programmers to enable them to use IMS to access Databases as effectively as possible. The course covers not only the facts about IMS database access, but also includes several practical exercises that allow attendees to work through various programs and learn the most structured and efficient use of IMS database calls.

On successful completion of this course you will be able to:

  • describe the basic components of IMS DB
  • understand and use IMS DB terminology
  • describe and explain the main facilities available in IMS DB
  • code and test a basic COBOL or PL/I program to access IMS databases.

Schedule

BEDRIJFSOPLEIDING AANVRAGEN

 

Publieke opleidingskalender

Momenteel zijn er voor deze cursus geen publieke sessies gepland. Graag organiseren we een bedrijfssessie voor u of een extra publieke sessie (bij voldoende belangstelling). Geïnteresseerd? Laat het ons weten.

Intended for

Systems Analysts, Applications Programmers and DBAs (as a first stage of their training).

Background

Participants should be familiar with writing programs in COBOL (see course COBOL programming - part 1) or PL/I (see PL/I programming: fundamentals course) and should be able to use ISPF (see course ISPF/PDF basics).

Main topics

  • Introduction to IMS
  • Hierarchical database versus conventional files;
  • hierarchical database terminology.
  • IMS Components
  • Data Base Description;
  • Program Specification Block; Application Control Block.
  • IMS Programming
  • IMS batch programming;
  • DL/1 Call Statement;
  • Segment Search Arguments;
  • GU function; GN function; GNP function; ISRT function; REPL function; DLET function;
  • efficiency considerations;
  • positioning;
  • multiple qualification;
  • IMS DB status codes;
  • program structure.
  • Command Codes
  • D Command Code; F Command Code; L Command Code; C Command Code; P Command Code; N Command Code; U Command Codes; V Command Code.
  • Database Access Methods
  • HSAM; HISAM; HDAM; HIDAM;
  • non-Hierarchical Sequential Organisation;
  • Secondary Indexing;
  • Logical Relationships; Logical Structures.

Training method

Classroom training with several practical exercises

Duration

4 days.

Course leader

RSM Technology.


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