1©TheRelationalDataModelandRelationalDatabaseConstraintsCopyright©2004PearsonEducation,©:"ARelationalModelforLargeSharedDataBanks,"CommunicationsoftheACM,June1970. :--:R(A1,A2,.....An) RelationschemaRisdefinedoverattributesA1,A2,.....An ForExample- CUSTOMER(Cust-id,Cust-name,Address,Phone#) Here,CUSTOMERisarelationdefinedoverthefourattributesCust-id,Cust-name,Address,Phone#,,thedomainofCust-.<632895,"JohnSmith",",GA30332","(404)894-2000">(rows).
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