Introduction to Database System An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A _____ database does not use pointers or physical links, but instead finds related records by examining the contents of fields. Object-Oriented None of these Relational Network Hierarchical Object-Oriented None of these Relational Network Hierarchical ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is a serious problem of file management systems? difficult to update All of these program dependence data redundancy lack of data independence difficult to update All of these program dependence data redundancy lack of data independence ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An on-line commercial site such as Amazon.com is an example of a(n) ________ . single-user database application e-commerce database application data mining database application multiuser database application single-user database application e-commerce database application data mining database application multiuser database application ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System If attribute A determines both attributes B and C, then it is also true that: B → A → (B,C) → C → B → A → (B,C) → C → ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n): transitive dependency. referential integrity constraint. insertion anomaly. normal form. transitive dependency. referential integrity constraint. insertion anomaly. normal form. ANSWER DOWNLOAD EXAMIANS APP