Introduction to Database System Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier? ID-dependent entity ID- independent entity Weak entity Strong entity ID-dependent entity ID- independent entity Weak entity Strong entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is a serious problem of file management systems? 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 difficult to update ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A relation is considered a: three-dimensional table. Column. one-dimensional table. two-dimensional table. three-dimensional table. Column. one-dimensional table. two-dimensional table. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which two files are used during operation of the DBMS? data dictionary and transaction log query language and utilities None of the listed here data dictionary and query language data dictionary and transaction log query language and utilities None of the listed here data dictionary and query language ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): entity. relationship. attribute. identifier. entity. relationship. attribute. identifier. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The relational model uses some unfamiliar terminology. A tuple is equivalent to a data base data item record field data base data item record field ANSWER DOWNLOAD EXAMIANS APP
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