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Oracle 1z1-071 Exam Syllabus Topics:

Section	Objectives
Subqueries and Advanced SQL	- Correlated subqueries and nested queries - Single-row and multi-row subqueries
SQL Functions	- Single-row functions 1. Character, numeric, date functions - Conversion and conditional functions 1. TO_CHAR, TO_NUMBER, CASE expressions
SQL Retrieval	- SELECT statements and filtering data 1. ORDER BY and row limiting 2. WHERE clause and conditions - Joins and set operations 1. UNION, INTERSECT, MINUS 2. INNER, OUTER, CROSS joins
Data Manipulation and Schema Objects	- DDL operations 1. CREATE, ALTER, DROP tables and constraints - DML operations 1. INSERT, UPDATE, DELETE, MERGE
Relational Database Concepts	- Data types and database objects overview - Tables, rows, columns, and relational model basics

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Oracle Database SQL Sample Questions (Q15-Q20):

NEW QUESTION # 15
View the Exhibit and examine the structure in the EMPLOYEES tables.

Evaluate the following SQL statement:
SELECT employee_id, department_id
FROM employees
WHERE department_id= 50 ORDER BY department_id
UNION
SELECT employee_id, department_id
FROM employees
WHERE department_id=90
UNION
SELECT employee_id, department_id
FROM employees
WHERE department_id=10;
What would be the outcome of the above SQL statement?

A. The statement would not execute because the positional notation instead of the column name should be used with the ORDER BY clause.
B. The statement would execute successfully but it will ignore the ORDER BY clause and display the rows in random order.
C. The statement would not execute because the ORDER BY clause should appear only at the end of the SQL statement, that is, in the last SELECT statement.
D. The statement would execute successfully and display all the rows in the ascending order of DEPARTMENT_ID.

Answer: C

NEW QUESTION # 16
View the Exhibit and examine the structure of CUSTOMERS table.
Using the CUSTOMERS table, you need to generate a report that shows an increase in the credit limit by 15% for all customers. Customers whose credit limit has not been entered should have the message "Not Available" displayed.
Which SQL statement would produce the required result?

A. SELECT NVL (TO CHAR(cust_credit_limit * .15), 'Not Available') "NEW CREDIT"FROM customers;
B. SELECT TO_CHAR (NVL(cust_credit_limit * .15), 'Not Available') "NEW CREDIT"FROM customers;
C. SELECT NVL(cust_credit_limit), 'Not Available') "NEW CREDIT"FROM customers;
D. SELECT NVL(cust_credit_limit * .15), 'Not Available') "NEW CREDIT"FROM customers;

Answer: A

NEW QUESTION # 17
Which three actions can you perform only with system privileges?

A. Access flat files via a database, which are stored in an operating system directory.
B. Truncate a table in another schema.
C. Use the WITH GRANT OPTION clause.
D. Query any table in a database.
E. Log in to a database.
F. Execute a procedure in another schema.

Answer: C,D,E

NEW QUESTION # 18
You execute this command:
TRUNCATE TABIE depts;
Which two are true?

A. It drops any triggers defined on the table.
B. A ROLLBACK statement can be used to retrieve the deleted data.
C. It retains the integrity constraints defined on the table,
D. It retains the indexes defined on the table.
E. A FLASHBACK TABLE statement can be used to retrieve the deleted data.
F. It always retains the space used by the removed rows.

Answer: C,D

Explanation:
When the TRUNCATE TABLE command is used:
* C. It retains the indexes defined on the table. This is true. The TRUNCATE TABLE operation does not drop the indexes on the table; it only removes all rows from the table.
* D. It retains the integrity constraints defined on the table. This is correct. The TRUNCATE TABLE operation does not affect the integrity constraints; it retains them.
Options A, B, E, and F are incorrect:
* A is incorrect because the TRUNCATE TABLE operation cannot be rolled back as it is a DDL operation and not a DML operation like DELETE.
* B is incorrect because TRUNCATE TABLE does not drop any triggers; they remain in place.
* E is incorrect as TRUNCATE TABLE may or may not release the space depending on whether the REUSE STORAGE clause is used.
* F is incorrect because FLASHBACK TABLE cannot be used to retrieve data after a TRUNCATE TABLE operation since it does not generate redo logs that FLASHBACK relies upon.

NEW QUESTION # 19
SELECT *
FROM bricks,colors;
Which two statements are true?

A. You can add a USING clause with a join condition.
B. You can add a WHERE clause with filtering criteria.
C. You can add an ON clause with a join condition.
D. It returnsthe same rows as SELECT * FROM bricks CROSS JOIN colors.
E. It returns the number of rows in BRICKS plus the number of rows in COLORS.

Answer: B,D

NEW QUESTION # 20
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