Introduction to SQL A SELECT statement within another SELECT statement and enclosed in square brackets ([...]) is called a subquery. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Data manipulation language (DML) commands are used to define a database, including creating, altering, and dropping tables and establishing constraints. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Find the SQL statement below that is equal to the following: SELECT NAME FROM CUSTOMER WHERE STATE = 'VA'; SELECT NAME IN CUSTOMER WHERE STATE = 'VA'; SELECT NAME IN CUSTOMER WHERE STATE IN ('VA'); SELECT NAME FROM CUSTOMER WHERE STATE IN ('VA'); SELECT NAME IN CUSTOMER WHERE STATE = 'V'; SELECT NAME IN CUSTOMER WHERE STATE = 'VA'; SELECT NAME IN CUSTOMER WHERE STATE IN ('VA'); SELECT NAME FROM CUSTOMER WHERE STATE IN ('VA'); SELECT NAME IN CUSTOMER WHERE STATE = 'V'; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. False True False True ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Which of the following is illegal? None of these SELECT SYSDATE - SYSDATE FROM DUAL; SELECT SYSDATE - (SYSDATE - 2) FROM DUAL; SELECT SYSDATE - (SYSDATE + 2) FROM DUAL; None of these SELECT SYSDATE - SYSDATE FROM DUAL; SELECT SYSDATE - (SYSDATE - 2) FROM DUAL; SELECT SYSDATE - (SYSDATE + 2) FROM DUAL; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL A subquery in an SQL SELECT statement: can only be used with two tables. cannot have its results sorted using ORDER BY. has a distinct form that cannot be duplicated by a join. can always be duplicated by a join. can only be used with two tables. cannot have its results sorted using ORDER BY. has a distinct form that cannot be duplicated by a join. can always be duplicated by a join. ANSWER DOWNLOAD EXAMIANS APP
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