Abstract
This paper identifies and defines the facilities needed to enable a database administrator to organise and control the development and operational running of a database system. The data needed to support these facilities, termed control data is discussed, and a conceptual data model for a control database is presented. This control database forms the core of a database administration support environment.The paper examines the facilities required from a database administration support environment for the effective specification and implementation of access control. A role-based model for access control is proposed, and is used to critically examine the current CODASYL approach to access control.This paper is based on the work of the BCS/CODASYL DDLC Database Administration Working Group, of which the authors are members. However, the opinions expressed in the paper are those of the authors.
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