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Um Sistema de Auditoria baseado na Analise de Registros de Log

Database Management Systems are essential in many applications. It is fundamental to guarantee the safety of stored data, and thus it is important to monitor when and which data has been read or written in order to prevent and detect misuse. This is usually achieved by auditing a log of records generated for this purpose. Nevertheless, if a record is generated for every operation on the database, the volume of log data may become overwhelming. In this case, it is important to define more specific auditing policies, including the selection of data, as well as types of queries to audit. This paper proposes the use of a Data Stream Management System (DSMS) to audit a database. The advantages of this approach are twofold. First, the database administrator can filter out auditing records, and define policies as DSMS queries. Second, auditing results are generated in real time, minimizing the amount of logging records, to be stored.