Introduction to Database System Which command is used to remove an index from the database in SQL? REMOVE INDEX DELETE INDEX ROLL BACK INDEX DROP INDEX REMOVE INDEX DELETE INDEX ROLL BACK INDEX DROP INDEX ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which of the following contains a complete record of all activity that affected the contents of a database during a certain period of time? transaction log report writer data manipulation language None of these query language transaction log report writer data manipulation language None of these query language ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Data encryption techniques are particularly useful for All of these improving data integrity None of these reducing storage space requirements protecting data in data communication systems All of these improving data integrity None of these reducing storage space requirements protecting data in data communication systems ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A form defines where data is placed on the screen both of the listed here none of the listed here the width of each field where data is placed on the screen both of the listed here none of the listed here the width of each field ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System An attribute that names or identifies entity instances is a(n): identifier. entity. relationship. attribute. identifier. entity. relationship. attribute. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System In a relation, the rows are sometimes called "fields". True False True False ANSWER DOWNLOAD EXAMIANS APP
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