©HCCS & IBM® 2008 Stephen Linkin 1

Database Management Systems On z/OS

Stephen S. LinkinHouston Community College

© HCCS and IBM 2008

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Database Management Systems For The Mainframe

What Is A Database? Why Use A Database? Who Is The Database Administrator?

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How Is A Database Designed?

Major Definitions Entities Data Attributes Entity Relationships

ORDER

Ord No: 12345

Cust: Acme Widgets

ITEMS

1. Boxes

2. Widgets

3. Coyotes

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How Is A Database Designed?

Major Definitions Entities Data Attributes Entity Relationships

Application Functions Access Paths

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What Is A Database Management System?

What Structures Exist In A Relational Database? Database Tables Indexes Keys

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What Is DB2?

Data Structures In DB2 Views Table Space Index Space Storage Groups

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What Is DB2?

Schema Structures User-defined Data Type (UDT) User-Defined Function (UDF) Trigger Large Object (LOB)

Binary Large Objects (BLOB’s) Character Large Objects (CLOB’s)

Double Byte Character Large Objects (DBCLOB’s)

Stored procedure

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What Is DB2?

System structures Catalog and directory Buffer pools Active and archive logs

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What Is DB2?

DB2 Address Spaces System services Database services Lock manager services (IRLM)

Using DB2 Utilities Using DB2 Commands

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What Is SQL?

DML DDL DCL

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Application Programming For DB2

DB2 program preparation: the flow DCLGEN

PRECOMPILE

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Application Programming For DB2

DB2 program preparation: the flow DCLGEN

PRECOMPILE BINDEXEC SQL

SELECT EMPNO, LASTNAME INTO :EMPNO, :LASTNAME FROM EMPEND-EXEC.

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Application Programming For DB2

DB2 program preparation: the flow DCLGEN

PRECOMPILE BIND RUN

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Functions Of The IMS Database Manager

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Structure Of The IMS Database Subsystem

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Structure Of The IMS Database Subsystem

The IMS Hierarchical Database Model Data Access Sequence

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Structure Of The IMS Database Subsystem

The IMS Hierarchical Database Model Data Access Sequence

IMS Use Of z/OS Services Evolution Of IMS

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Summary

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