#choose#challenge#rename
#relational_algebra
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#selectoperator
#projectoperator
#renameoperator
#ralatinalalgebrabasic
#relational_algebra
#relational_algebra_basic
#relational_algebara_for_beginars
#relational_algebra_bangla
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Khub valo kore bujte pere6i………..
Join operater diye Quary explain Karo…..