Sunday, May 4, 2008


In this section I explain about the various agents we are using in this project.
The constraint checking algorithm is implemented by the Local agent. The Local agent receives the query given by the user and identifies the tables affected by the query using query-parsing. It forms a query for constraint checking. Then it invokes the Remote agent at corresponding sites and gets the value returned from the remote agent.
The remote agent receives the query from the Local agent and it establishes the database connection. Then it performs the query execution and returns the value obtained from the execution. remote agent is simple when compared to local agent

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