Which of the following is one of the basic approaches for joining tables?

Related MCQs

• A lock that prevents the use of any tables in the database from one transaction while another transaction is being processed is called a
• Which of the following clause specifies the table or tables from where the data has to be retrieved?
• View the Exhibit and examine the structure of the EMPLOYEES and DEPARTMENTS tables. Which SET operator would you use in the blank space in the following SQL statement to list the departments where all the employees have managers? SELECT department_id FROM departments ____ SELECT department_id FROM employees WHERE manager_id IS NULL;
• 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 is the subset of SQL commands used to manipulate Oracle Database Structures, including tables?
• Which statement is true regarding external tables?
• In which model of database data is stored in tables:
• In which ways two tables may be related:
• Which command creates database objects like tables, views and indexes:
• Which data model organizes the data in the form of tables and relations?