Introduction to SQL Which of the following is valid SQL for an Index? ADD INDEX ID; REMOVE INDEX ID; CHANGE INDEX ID; CREATE INDEX ID; ADD INDEX ID; REMOVE INDEX ID; CHANGE INDEX ID; CREATE INDEX ID; ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Each index consumes extra storage space and also requires overhead maintenance time whenever indexed data change value. True False True False ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL Table employee has 10 records. It has a non-NULL SALARY column which is also UNIQUE.The SQL statementSELECT COUNT(*) FROM employee WHERE SALARY > ALL (SELECT SALARY FROM EMPLOYEE);prints 10 0 5 9 10 0 5 9 ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL SQL data definition commands make up a(n) ________ . XML HTML DDL DML XML HTML DDL DML ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL In SQL, which command is used to change a table's storage characteristics? None of these MODIFY TABLE CHANGE TABLE ALTER TABLE None of these MODIFY TABLE CHANGE TABLE ALTER TABLE ANSWER DOWNLOAD EXAMIANS APP
Introduction to SQL The qualifier DISTINCT must be used in an SQL statement when we want to eliminate duplicate rows. True False True False ANSWER DOWNLOAD EXAMIANS APP
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