Introduction to Database System Entity instances are associated by relationship classes. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A list consists of last names, first names, addresses, and pin codes if all people in the list have the same last and the same pin code, a useful key would be All of these None of these the last name a compound key consisting of the first name and the last name the pin code All of these None of these the last name a compound key consisting of the first name and the last name the pin code ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The functional dependency R → S means that the value of S can be determined when we are given a value of R. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In SQL, which command is used to add new rows to a table? INSERT ADD ROW ALTER TABLE APPEND INSERT ADD ROW ALTER TABLE APPEND ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following is not an advantage of the data-base approach? ability to associate related data elimination of the data redundancy All of these program/data independence increased security ability to associate related data elimination of the data redundancy All of these program/data independence increased security ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A scheme describes records and files None of these record relationships data elements All of these records and files None of these record relationships data elements All of these ANSWER DOWNLOAD EXAMIANS APP
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