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Database views are extensively used to represent unmaterialized tables. Applications rarely distinguish between a materialized base table and a virtual view, thus, they may issue update requests on the views. Since views are virtual, update requests on them need to be translated to updates on the base tables. Existing literature has shown the difficulty of translating view updates in a side-effect free manner. To address this problem, we propose a novel approach for separating the data instancedoi:10.1109/icde.2006.167 dblp:conf/icde/KotidisSV06 fatcat:mtrr64rl2rertbgvxm3vif7k7y