Where is the Logical Data Model (Entity Relationship Diagram) for Service Desk r12.x?

Document ID : KB000054390
Last Modified Date : 14/02/2018
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The Logical Data Model (LDM) poster illustrates relationships between objects and attributes in Service Desk.

In versions prior to Service Desk r12, this was referred to as the Entity Relationship Diagram (ERD).

This document is not located in the default documentation folder where the other product documentation .PDF files are located.

It provides a useful visual overview to the key relationships between objects and attributes in Service Desk.


The Logical Data Model for CA Service Desk r12.x is provided in the directory $NX_ROOT/samples/data/ after Service Desk is installed. The filename is logicaldatamodel.pdf.

This file is not in the default documentation directory of Service Desk. As such, it is not extractable from the Service Desk r12.x installation DVD or ISO file.
Service Desk must be installed in order to view this file.

You may also order a full colour printed poster of the LDM by contacting your local CA representative.

Please note that not all objects and attributes are displayed on this poster, only the key ones. There are approximately sixty objects displayed in the LDM. There are many more in Service Desk.

For the complete listing of objects and attributes, and their related tables and fields, always consult the CA Service Desk Technical Reference guide, which is located in the documentation folder of the installation DVD, and which is also available for download from the Service Desk page on support.ca.com.

The Technical Reference should be relied on for comprehensive details. The LDM is useful as an additional resource.

The LDM provided with Service Desk r12.1 is the same as that provided with Service Desk r12.0, even though there have been minor changes to the objects and attributes between the two releases.

Click the links below to download the PDF version of Logical Data Model.