working on update & delete
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@ -291,5 +291,9 @@ Relation DBEngine::crossProduct(Relation r1, Relation r2){
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//WHERE Name = ‘Joseph Lieberman’
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Relation DBEngine::update(Relation r, string attNameSet, string attSet, string attNameWhere, string attWhere){
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Relation temp = equality(attNameWhere, attWhere, r);
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return r;
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}
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