Introduction to Database System Which command is used to remove an index from the database in SQL? DROP INDEX DELETE INDEX ROLL BACK INDEX REMOVE INDEX DROP INDEX DELETE INDEX ROLL BACK INDEX REMOVE INDEX ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity? Archetype entity Instance entity Supertype entity Subtype entity Archetype entity Instance entity Supertype entity Subtype entity ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System When designing a database, first identify the entities, then determine the attributes, and finally establish the relationships. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System A key: can only be one column. identifies a row. identifies a column. must always be composed of two or more columns. can only be one column. identifies a row. identifies a column. must always be composed of two or more columns. ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System The language used in application programs to request data from the DBMS is referred to as the query language DDL All of the listed here DML query language DDL All of the listed here DML ANSWER DOWNLOAD EXAMIANS APP
Introduction to Database System Data items grouped together for storage purposes are called a list None of these record string title list None of these record string title ANSWER DOWNLOAD EXAMIANS APP
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