The Auxiliary Database Controller

The database manager processes all the database calls made by your application program. You can use the DP4 auxiliary database controller (ADC) to write database system code in C that is executed before the database manager code.

The Auxiliary Database Controller processes all the Controller (ADC) database calls made by your application program. It is a skeleton program, into which you can add whatever code you want to be executed as a "plug-in" before the database manager code.

You can write database system code to:

• Use a non-DP4 database or file system

• Add "intelligence" to the database manager without modifying your application programs

• Access communications services

  You can find out more about writing ADCs here.