1Which data model represents data as tables of rows and columns?ANetwork modelBObject modelCHierarchical modelDRelational modelView AnswerDiscussWorkspaceReportSaveEasy
2Cardinality in an E-R relationship describes:AThe number of attributesBHow many entities of one set relate to entities of anotherCThe data type of a keyDThe size of the databaseView AnswerDiscussWorkspaceReportSaveEasy
3A dashed ellipse represents a:AComposite attributeBKey attributeCMultivalued attributeDDerived attributeView AnswerDiscussWorkspaceReportSaveEasy
4In an E-R diagram, an entity set is represented by a:AEllipseBDiamondCLineDRectangleView AnswerDiscussWorkspaceReportSaveEasy
5A many-to-many relationship between Students and Courses is implemented in a relational database by:AA separate table holding foreign keys to bothBA foreign key in Students onlyCA foreign key in Courses onlyDMerging the two tablesView AnswerDiscussWorkspaceReportSaveMedium