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Oracle 1Z0-007 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Aggregating Data Using Group Functions | 13% | - Filtering groups with HAVING - GROUP BY clause - Using COUNT, SUM, AVG, MAX, MIN |
| Topic 2: Restricting and Sorting Data | 12% | - Using substitution variables - Sorting results with ORDER BY - Limiting rows with WHERE clause |
| Topic 3: Subqueries | 10% | - Using IN, ANY, ALL operators - Single-row and multi-row subqueries |
| Topic 4: Displaying Data from Multiple Tables | 15% | - Outer joins and self-joins - Equijoins and non-equijoins - ANSI/ISO SQL99 joins |
| Topic 5: Manipulating Data | 8% | - INSERT, UPDATE, DELETE statements - Transaction control (COMMIT, ROLLBACK, SAVEPOINT) |
| Topic 6: Creating and Managing Tables | 9% | - CREATE, ALTER, DROP, RENAME tables - Managing indexes, sequences, synonyms, views - Data types and constraints |
| Topic 7: Writing Basic SQL SELECT Statements | 15% | - Executing basic SELECT statements - Capabilities of SQL SELECT statements - SQL vs iSQL*Plus commands |
| Topic 8: Single-Row Functions | 18% | - Character, number, and date functions - Conversion functions (TO_CHAR, TO_NUMBER, TO_DATE) - Conditional expressions (NVL, DECODE) |
Oracle Introduction to Oracle9i: SQL Sample Questions:
In which four clauses can a subquery be used? (Choose four.)
- A. in the INTO clause of an INSERT statement
- B. in the WHERE clause of a SELECT statement
- C. in the VALUES clause of an INSERT statement
- D. in the FROM clause of a SELECT statement
- E. in the SET clause of an UPDATE statement
- F. in the GROUP BY clause of a SELECT statement
Correct Answer: A,B,D,E 🗳️
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You need to display the last names of those employees who have the letter "A" as the second character in their names.
Which SQL statement displays the required results?
- A. SELECT last_name FROM EMP WHERE last name ='*A%'
- B. SELECT last_name FROM EMP WHERE last name ='_A%';
- C. SELECT last_name FROM EMP WHERE last_name LIKE '_A%';
- D. SELECT last_name FROM EMP WHERE last name LIKE '*A%'
Correct Answer: C 🗳️
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Exhibit
Evaluate this SQL statement: SELECT cust_id, ord_total FROM orders WHERE ord_total > ANY (SELECT ord_total FROM orders WHERE cust_id IN (SELECT cust_id FROM customers WHERE city LIKE 'New York'));
What is the result when the above query is executed?
- A. Option A
- B. Option B
- C. Option D
- D. Option F
- E. Option C
- F. Option E
Correct Answer: A 🗳️
You need to perform certain data manipulation operations through a view called EMP_DEPT_VU, which you previously created.
You want to look at the definition of the view (the SELECT statement on which the view was create.)
How do you obtain the definition of the view?
- A. Query the USER_SOURCE data dictionary view to search for the EMP_DEPT_VU view.
- B. Use the DEFINE VIEW command on the EMP_DEPT VU view.
- C. Use the DESCRIBE command in the EMP_DEPT VU view.
- D. Use the DESCRIBE VIEW command on the EMP_DEPT VU view.
- E. Query the USER_OBJECTS data dictionary view to search for the EMP_DEPT_VU view.
- F. Query the USER_VIEWS data dictionary view to search for the EMP_DEPT_VU view.
Correct Answer: F 🗳️
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Which two statements are true regarding the ORDER BY clause? (Choose two)
- A. The ORDER BY clause comes last in the SELECT statement.
- B. The sort is in descending order by default.
- C. The ORDER BY clause is executed on the client side.
- D. The ORDER BY clause is executed first in the query execution.
- E. The sort is in ascending by order by default.
- F. The ORDER BY clause must precede the WHERE clause.
Correct Answer: A,E 🗳️
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