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Oracle 1Z0-007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Producing Readable Output with iSQL*Plus | - Script files - Substitution variables |
| Subqueries | - Define subqueries - Single–row and multiple–row subqueries |
| Creating Other Database Objects | - Indexes - Sequences - Synonyms |
| Restricting and Sorting Data | - Limit rows retrieved by a query - Sort rows retrieved by a query |
| Writing Basic SQL SELECT Statements | - Capabilities of SQL SELECT statements - Execute a basic SELECT statement - Differentiate between SQL and iSQL*Plus commands |
| Displaying Data from Multiple Tables | - Outer joins - Equality and nonequality joins - Self–join |
| Single–Row Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Creating Views | - Create, alter, drop views - DML through views |
| Manipulating Data | - UPDATE rows - DELETE rows - MERGE rows - INSERT rows |
Oracle Introduction to Oracle9i: SQL Sample Questions:
The EMPLOYEES table contains these columns:
EMPLOYEE_ID NUMBER(4)
ENAME VARCHAR2 (25)
JOB_ID VARCHAR2(10)
Which SQL statement will return the ENAME, length of the ENAME, and the numeric position of the letter "a" in the ENAME column, for those employees whose ENAME ends with a the letter "n"?
- A. SELECT ENAME, LENGTH(ENAME), INSTR(ENAME, 'a') FROM EMPLOYEES WHERE SUBSTR(ENAME, -1, 1) = 'n';
- B. SELECT ENAME, LENGTH(ENAME), SUBSTR(ENAME, -1,1) FROM EMPLOYEES WHERE INSTR(ENAME, 1, 1) = 'n';
- C. SELECT ENAME, LENGTH(ENAME), INSTR(ENAME, ,-1,1) FROM EMPLOYEES WHERE SUBSTR(ENAME, -1, 1) = 'n';
- D. SELECT ENAME, LENGTH(ENAME), SUBSTR(ENAME, -1,1) FROM EMPLOYEES WHERE INSTR(ENAME, -1, 1) = 'n';
Explanation: Only visible for Lead1Pass members. You can sign-up / login (it's free).
Examine the data from the EMP table. Evaluate this SQL statement:
SELECT * FROM emp WHERE commission = (SELECT commission FROM emp
WHERE emp_id=3);
What is the result when the query is executed?
- A. The query returns no rows
- B. The query fails because both the inner and outer queries are retrieving data from the same table.
- C. Exhibit A
- D. The query fails because the outer query is retrieving more than one column
- E. Exhibit B
What is true about the WITH GRANT OPTION clause?
- A. It allows a grantee DBA privileges.
- B. It is used to grant an object privilege on a foreign key column.
- C. It is required syntax for object privileges.
- D. It allows privileges on specified columns of tables.
- E. It allows the grantee to grant object privileges to other users and roles.
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Which SQL statement returns a numeric value?
- A. SELECT ROUND(hire_date) FROM EMP;
- B. SELECT sysdate-hire_date FROM EMP;
- C. SELECT ADD_MONTHS(MAX(hire_Date), 6) FROM EMP;
- D. SELECT TO_NUMBER(hire_date + 7) FROM EMP;
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You added a PHONE_NUMBER column of NUMBER data type to an existing EMPLOYEES table. The EMPLOYEES table already contains records of 100 employees. Now, you want to enter the phone numbers of each of the 100 employees into the table.
Some of the employees may not have a phone number available.
Which data manipulation operation do you perform?
- A. UPDATE
- B. INSERT
- C. You cannot enter the phone numbers for the existing employee records.
- D. ADD
- E. MERGE
- F. ENTER
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