---
title: "IMS DB/DC Admin Quick Concepts"
description: "Quick refresher on IMS DB database administration concepts."
url: https://srinimf.com/2014/06/17/ims-db-dc-concepts-and-administration-refresher/
date: 2014-06-17
modified: 2026-10-10
author: "Srini"
image: https://i0.wp.com/srinimf.com/wp-content/uploads/2020/08/pexels-photo-3781964.jpeg?fit=1880%2C1253&ssl=1
categories: ["IMS DB", "IMS DC"]
tags: ["IMS DB Tips and Tricks"]
type: post
lang: en
---

# IMS DB/DC Admin Quick Concepts

This is great IMSDB/DC material for super success in interviews. Use this as a quick refresher. Any questions, you may post here, we will answer those.

Related[JCL refresher#1: What is JCL](https://srinimf.com/2016/09/05/jcl-refresher1-what-is-jcl/)

The term database means a collection of related data organized in a  way that can be processed by application programs.

A database management system  (DBMS) consists of a set of licensed programs that define and maintain the structure of the database and provide support for certain [types of](https://srinimf.com/2022/01/23/two-types-of-plsql-cursors-what-are-those/) application programs.

Related[IMS DB/DC Admin Quick Concepts](https://srinimf.com/2014/06/17/ims-db-dc-concepts-and-administration-refresher/)

*“The types of database structures are network, relational, and hierarchical. This manual presents information on IMS, a [hierarchical database](https://srinimf.com/2014/07/13/hierarchical-vs-rdbms/)  management system from IBM.”*

The IMS software environment can be divided into five main parts:

- database
- Data Language I (DL/I)
- DL/I control blocks
- data communications component (IMS TM)
- application programs

**Important Topics**

1. Hierarchical versus Relational Databases
2. Design Considerations
3. Segment Edit/Compression

Read more details in 3 parts.[Part-1](https://communities.bmc.com/docs/DOC-9908) |[Part-2](https://communities.bmc.com/docs/DOC-9943)| [Part-3](https://communities.bmc.com/docs/DOC-9973)

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