Introduction to Database System Two files may be joined into a third file if they have a row in common they have no records with the same value in the common field both (b) and (c) they have a field in common None of these they have a row in common they have no records with the same value in the common field both (b) and (c) they have a field in common None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A compound key uniquely identifies an item in a list is made up a several pieces of information both (a) and (b) is a combination of each unique key None of these uniquely identifies an item in a list is made up a several pieces of information both (a) and (b) is a combination of each unique key None of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not considered to be a basic element of an enterprise-class database system? Database applications DBMS Users COBOL programs Database applications DBMS Users COBOL programs ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Data security threats include fraudulent manipulation of data hardware failure all of the listed here privacy invasion fraudulent manipulation of data hardware failure all of the listed here privacy invasion ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A subtype entity is a special case of another entity called a supertype entity. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The main idea behind computer files is that it is convenient to access them store information together create them arrange them access them store information together create them arrange them ANSWER DOWNLOAD EXAMIANS APP
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