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Oracle 1Z0-007 Exam Syllabus Topics:
| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Single-Row Functions | 18% | - Conditional expressions (NVL, DECODE) - Character, number, and date functions - Conversion functions (TO_CHAR, TO_NUMBER, TO_DATE) |
| Topic 2: Restricting and Sorting Data | 12% | - Sorting results with ORDER BY - Using substitution variables - Limiting rows with WHERE clause |
| Topic 3: Manipulating Data | 8% | - Transaction control (COMMIT, ROLLBACK, SAVEPOINT) - INSERT, UPDATE, DELETE statements |
| Topic 4: Aggregating Data Using Group Functions | 13% | - Using COUNT, SUM, AVG, MAX, MIN - GROUP BY clause - Filtering groups with HAVING |
| Topic 5: Creating and Managing Tables | 9% | - CREATE, ALTER, DROP, RENAME tables - Managing indexes, sequences, synonyms, views - Data types and constraints |
| Topic 6: Subqueries | 10% | - Using IN, ANY, ALL operators - Single-row and multi-row subqueries |
| Topic 7: Writing Basic SQL SELECT Statements | 15% | - SQL vs iSQL*Plus commands - Executing basic SELECT statements - Capabilities of SQL SELECT statements |
| Topic 8: Displaying Data from Multiple Tables | 15% | - ANSI/ISO SQL99 joins - Equijoins and non-equijoins - Outer joins and self-joins |
Oracle Introduction to Oracle9i: SQL Sample Questions:
Which three statements about subqueries are true? (Choose three.)
- A. Only one column or expression can be compared between the subquery and main query.
- B. The subquery and main query can retrieve data from different tables.
- C. A main query can have more than one subquery.
- D. Multiple columns or expression can be compared between the subquery and main query.
- E. The subquery and main query must retrieve data from the same table.
- F. A subquery can have more than one main query.
Correct Answer: A,B,C 🗳️
Explanation: Only visible for TestkingPDF members. You can sign-up / login (it's free).
The EMPLOYEES table contains these columns:
You need to write a query that will produce these results:
1.Display the salary multiplied by the commission_pct.
2.Exclude employees with a zero commission_pct.
3.Display a zero for employees with a null commission value.
Evaluate the SQL statement:
SELECT LAST_NAME, SALARY*COMMISSION_PCT
FROM EMPLOYEES
WHERE COMMISSION_PCT IS NOT NULL;
What does the statement provide?
- A. An error statement
- B. One of the desired results
- C. All of the desired results
- D. Two of the desired results
Correct Answer: B 🗳️
Explanation: Only visible for TestkingPDF members. You can sign-up / login (it's free).
Examine the structure of the EMPLOYEES table:
EMPLOYEE_ID NUMBER Primary Key
FIRST_NAME VARCHAR2(25)
LAST_NAME VARCHAR2(25)
Which three statements insert a row into the table? (Choose three.)
- A. INSERT INTO employees (employee_id, first_name, last_name) VALUES ( 1000, 'John', ' ');
- B. INSERT INTO employees (first_name, last_name, employee_id) VALUES ( 1000, 'John', 'Smith');
- C. INSERT INTO employees VALUES ( 1000, 'John', NULL);
- D. INSERT INTO employees (employee_id) VALUES (1000);
- E. INSERT INTO employees VALUES ( NULL, 'John', 'Smith');
- F. INSERT INTO employees( first_name, last_name) VALUES( 'John', 'Smith');
Correct Answer: A,C,D 🗳️
Explanation: Only visible for TestkingPDF members. You can sign-up / login (it's free).
Mary has a view called EMP_DEPT_LOC_VU that was created based on the EMPLOYEES, DEPARTMENTS, and LOCATIONS tables. She granted SELECT privilege to Scott on this view.
Which option enables Scott to eliminate the need to qualify the view with the name MARY .EMP_DEP_LOC_VU each time the view is referenced?
- A. Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command:
CREATE SYNONYM EDL_VU
ON mary(EMP_DEPT_LOC_VU);
then he can prefix the columns with this synonym. - B. Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command:
CREATE SYNONYM EDL_VU
FOR mary.EMP_DEPT_LOC_VU;
then he can prefix the columns with this synonym. - C. Scott cannot create a synonym because synonyms can be created only for tables.
- D. Scott cannot create any synonym for Mary's view. Mary should create a private synonym
for the view and grant SELECT privilege on that synonym to Scott. - E. Scott can create a synonym for the EMP_DEPT_LOC_VU bus using the command:
CREATE PRIVATE SYNONYM EDL_VU
FOR mary.EMP DEPT_LOC_VU;
then he can prefix the columns with this synonymn. - F. Scott can create a synonym for the EMP_DEPT_LOC_VU by using the command:
CREATE LOCAL SYNONYM EDL_VU
FOR mary.EMP DEPT_LOC_VU;
then he can prefix the columns with this synonym.
Correct Answer: B 🗳️
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Which two statements complete a transaction? (Choose two)
- A. ALTER TABLE employees
SET UNUSED COLUMN sal; - B. ROLLBACK TO SAVEPOINT C;
- C. DELETE employees;
- D. Select MAX(sal)
FROM employees
WHERE department_id = 20; - E. DESCRIBE employees;
- F. GRANT SELECT ON employees TO SCOTT;
Correct Answer: A,F 🗳️
Explanation: Only visible for TestkingPDF members. You can sign-up / login (it's free).
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