Existing systems require specific client softwares called drivers which are to be installed/ loaded in the client machines, to access the database server in remote machines. The network administrator has to install the Database Management Software and configure the database drivers on all client machines in order for an application to contact the database for any DBMS operation which is an overhead to the network administrator especially when the number of client machines in the network is more. For example Oracle requires SQL plus Client to access Oracle Server; Microsoft SQL Server requires Query Analyzer to be installed in the client to connect to SQL Server Client.
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