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| Section | Objectives |
|---|---|
| Topic 1: Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Topic 2: Using DML Statements | - Delete rows from a table - Use the MERGE statement - Insert rows into a table - Control transactions - Update rows in a table |
| Topic 3: Using Subqueries | - Use multiple-row subqueries - Use single-row subqueries - Use correlated subqueries |
| Topic 4: Using SQL Functions | - Use conversion functions - Use character, number, and date functions in SELECT statements |
| Topic 5: Using DDL Statements | - Create and manage tables - Create and manage constraints - Create and manage views - Create and manage indexes - Create and manage sequences |
| Topic 6: Using Joins | - Use equijoins and non-equijoins - Use cross joins - Use self-joins - Use outer joins (LEFT, RIGHT, FULL) |
| Topic 7: Using SELECT Statements | - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows - Execute a basic SELECT statement - Use the FETCH clause to limit rows returned |
| Topic 8: Controlling User Access | - Differentiate system privileges from object privileges - Create and manage roles - Grant and revoke privileges |
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NEW QUESTION # 68
What does the following query return?
SELECT employee_id
FROM employees
WHERE department_id IN (SELECT department_id FROM departments WHERE location_id = 1000);
Answer: A
NEW QUESTION # 69
What is the purpose of the DBA_OBJECTS data dictionary view?
Answer: C
NEW QUESTION # 70
Which of the following SQL commands retrieves data from a relational database?
Answer: B
NEW QUESTION # 71
What is the purpose of the SAVEPOINT statement?
Answer: B
NEW QUESTION # 72
What type of join does the following query perform?
SELECT *
FROM employees e, departments d
WHERE e.department_id = d.department_id;
Answer: D
NEW QUESTION # 73
......
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