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| Section | Objectives |
|---|---|
| Topic 1: Using DML Statements | - Delete rows from a table - Control transactions - Update rows in a table - Use the MERGE statement - Insert rows into a table |
| Topic 2: Using Joins | - Use equijoins and non-equijoins - Use cross joins - Use self-joins - Use outer joins (LEFT, RIGHT, FULL) |
| Topic 3: Using Subqueries | - Use single-row subqueries - Use multiple-row subqueries - Use correlated subqueries |
| Topic 4: Using DDL Statements | - Create and manage tables - Create and manage views - Create and manage constraints - Create and manage indexes - Create and manage sequences |
| Topic 5: Using SQL Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Topic 6: Using Set Operators | - Use UNION, UNION ALL, INTERSECT, and MINUS operators |
| Topic 7: Using SELECT Statements | - Use the ORDER BY clause to sort rows - Use the WHERE clause to restrict rows - Use the FETCH clause to limit rows returned - Execute a basic SELECT statement |
| 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 # 105
Which command would drop an index from a table?
Answer: B
NEW QUESTION # 106
What is the result of the following query?
SELECT employee_id
FROM employees
WHERE EXISTS (SELECT 1 FROM departments WHERE department_id = 10);
Answer: D
NEW QUESTION # 107
What happens if a DELETE statement is executed without a WHERE clause?
Answer: B
NEW QUESTION # 108
What is the purpose of the MERGE statement in SQL?
Answer: D
NEW QUESTION # 109
What does the following query return?
SELECT department_id FROM departments
INTERSECT
SELECT department_id FROM employees;
Answer: C
NEW QUESTION # 110
......
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