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Oracle 1Z0-007 Exam Syllabus Topics:
| Section | Objectives |
|---|---|
| Single–Row Functions | - Use character, number, and date functions in SELECT statements - Use conversion functions |
| Writing Basic SQL SELECT Statements | - Capabilities of SQL SELECT statements - Differentiate between SQL and iSQL*Plus commands - Execute a basic SELECT statement |
| Producing Readable Output with iSQL*Plus | - Script files - Substitution variables |
| Creating Other Database Objects | - Sequences - Synonyms - Indexes |
| Restricting and Sorting Data | - Limit rows retrieved by a query - Sort rows retrieved by a query |
| Displaying Data from Multiple Tables | - Equality and nonequality joins - Outer joins - Self–join |
| Manipulating Data | - UPDATE rows - MERGE rows - DELETE rows - INSERT rows |
| Creating Views | - Create, alter, drop views - DML through views |
| Subqueries | - Single–row and multiple–row subqueries - Define subqueries |
Oracle Introduction to Oracle9i: SQL Sample Questions:
A SELECT statement can be used to perform these three functions:
1.Choose rows from a table.
2.Choose columns from a table
3.Bring together data that is stored in different tables by creating a link between them.
Which set of keywords describes these capabilities?
- A. difference, projection, product
- B. selection, projection, join
- C. selection, intersection, join
- D. intersection, projection, join
- E. difference, projection, join
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Which clause should you use to exclude group results?
- A. RESTRICT
- B. WHERE
- C. ORDER BY
- D. GROUP BY
- E. HAVING
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Evaluate the SQL statement:
SELECT ROUND (TRUNC(MOD(1600,10),-1),2)
FROM dual;
What will be displayed?
- A. 1
- B. 0
- C. An error statement
- D. 0.00
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Which SQL statement defines the FOREIGN KEY constraint on the DEPTNO column of the EMP table?
- A. CREATE TABLE EMP (empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) FOREIGN KEY
CONSTRAINT emp deptno fk REFERENCES dept (deptno)); - B. CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2) NOT NULL
CONSTRAINT emp_deptno_fk FOREIGN KEY deptno
REFERENCES dept deptno); - C. CREATE TABLE EMP
(empno NUMBER(4),
ename VARCHAR2(35),
deptno NUMBER(7,2)
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno)); - D. CREATE TABLE EMP
(empno NUMBER(4)
ename VARCHAR2(35),
deptno NUMBER(7,2) NOT NULL,
CONSTRAINT emp_deptno_fk REFERENCES dept (deptno)
FOREIGN KEY (deptno));
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Evaluate these two SQL statements:
SELECT last_name, salary , hire_date
FROM EMPLOYEES
ORDER BY salary DESC;
SELECT last_name, salary, hire_date
FROM EMPLOYEES
ORDER BY 2 DESC;
What is true about them?
- A. There is no need to specify DESC because the results are sorted in descending order by default.
- B. The second statement returns a syntax error.
- C. The two statements can be made to produce identical results by adding a column alias for the salary column in the second SQL statement.
- D. The two statements produce identical results.
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