Because CA ADS operates in the CA IDMS/DB environment, it is important to review how data is defined and stored in that environment. In a traditional application development environment, the application programs comprise both processing logic and information about the data accessed. Processing logic, which determines the action taken by a program to produce the desired output, correctly belongs in the realm of programming. Defining information about data (such as the format of records and elements, and editing criteria) can be handled more easily and efficiently as a separate function.
The CA IDMS/DB environment uses the dictionary to accomplish this separation of information about data from process logic. The dictionary maintains information about data and makes this information directly available to the application maps and dialogs that need it.
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