SQL can be used to:

Related MCQs

•                  dump, writes out SQL DDL statements and SQL insert statements to a file, which can then be reexecuted to re- create the database.
• Which SQL function is used to count the number of rows in a SQL query?
• View the Exhibit and examine the data in the EMPLOYEES tables. Evaluate the following SQL statement: SELECT employee_id, department_id FROM employees WHERE department_id= 50 ORDER BY department_id UNION SELECT employee_id, department_id FROM employees WHERE department_id= 90 UNION SELECT employee_id, department_id FROM employees WHERE department_id= 10; What would be the outcome of the above SQL statement?
• Which of the following SQL command can be used to modify existing data in a database table?
• The UNION SQL clause can be used with _____________
• With SQL, how can you return all the records from a table named “Persons” sorted descending by “FirstName”?
• With SQL, how can you return the number of not null records in the “Persons” table?
• The UPDATE SQL clause can _____________
• Using the SQL GROUP BY phrase with a SELECT statement can help detect which of the following problems?
• SQL applies predicates in the                 clause after groups have been formed, so aggregate functions may be used.