The access control decision is enforced by a mechanism of security policy. Fine Grained Access Control (FGAC) is one of the ways to ensure data security in database. Nowadays, we store a measurable portion of that data in the relational database management systems (RDBMS). Access control is one of the cornerstones of any Information Security Policy. The granularity of such access control can be on different levels, like on directories or folder level, database level, table level, and even on individual record (tuple) and data field level. In this paper we described the introduction of Access Control Mechanisms of fine-grained access control in databases which determines whether access to a resource is permitted. We also included the study of Oracle's Virtual Private Database. Different models exist for providing access control at Database level is our proposed work.

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