The following topics are covered:

• Database Design contains information on database design. It includes information on Adabas file structures, multiple-value fields and periodic groups, record design, the use of keys (descriptors), disk space usage (compression, null value suppression, padding factors), security planning and restart and recovery planning.

• Container Files provides information about the Adabas container files.

• Temporary Working Space contains information about allocating and deleting temporary working space if it is required by the Adabas nucleus or utilities.

• FDT Record Structure describes how to define the record structure of a file in the database.

• Defining Descriptors defines how to create and delete descriptors for a file.

• Using Utilities provides general information on how to work with the Adabas utilities.

• Loading and Unloading Data describes various methods for loading data into the database and unloading data from the database.

• User Exits and Hyperexits contains an explanation of the user exits and hyperexits that are supported by Adabas.

• Adabas on Read-only Devices contains information about running Adabas on read-only devices, and any restrictions that apply in such an environment.

• Adabas Concurrency Check describes the handling of the concurrency check in Adabas databases.