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As databases get widely deployed, it becomes increasingly important to reduce the overhead of database administration. An important aspect of data administration that critically influences performance is the ability to select indexes for a database. In order to decide the right indexes for a database, it is crucial for the database administrator (DBA) to be able to perform a quantitative analysis of the existing indexes. Furthermore, the DBA should have the ability to propose hypotheticaldoi:10.1145/276304.276337 dblp:conf/sigmod/ChaudhuriN98 fatcat:n3aei5pwpnfmtb25ikee3du2fi