Introduction to Database System All instances of an entity class have the same attributes. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following products was an early implementation of the relational model developed by E.F. Codd of IBM? DB2 R:base dBase-II IDMS DB2 R:base dBase-II IDMS ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System One data dictionary software package is called TOTAL None of these ACCESS DB/DC dictionary any of the above TOTAL None of these ACCESS DB/DC dictionary any of the above ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Composite identifiers consist of two or more attributes. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Keys made up of two or more attributes are called composite keys. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Two files may be joined into a third file if they have a row in common None of these both (b) and (c) they have no records with the same value in the common field they have a field in common they have a row in common None of these both (b) and (c) they have no records with the same value in the common field they have a field in common ANSWER DOWNLOAD EXAMIANS APP
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