Introduction to Database System A primary key is a composite key that was selected to be the main identifier for the relation. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The main idea behind computer files is that it is convenient to create them store information together access them arrange them create them store information together access them arrange them ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The model for a _____ resembles the hierarchical model in many respects. Relational database None of these Hierarchical database Distributed database Network database Relational database None of these Hierarchical database Distributed database Network database ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is a serious problem of file management systems? lack of data independence difficult to update program dependence data redundancy All of these lack of data independence difficult to update program dependence data redundancy All of these ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A good query system can be accessed only by data processing professionals None of these allows non-programmers to access information stored in a database both (a) and (b) can accept English language commands can be accessed only by data processing professionals None of these allows non-programmers to access information stored in a database both (a) and (b) can accept English language commands ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A multiple-form file management system both (a) and (b) lets you define different forms for different operations None of these lets you create a look-up form with an associated read-only password to prevent access by unauthorized users allow you to entry data in all the forms both (a) and (b) lets you define different forms for different operations None of these lets you create a look-up form with an associated read-only password to prevent access by unauthorized users allow you to entry data in all the forms ANSWER DOWNLOAD EXAMIANS APP
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