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Oracle 1z0-071 exam covers a wide range of topics related to SQL databases. 1z0-071 Exam is designed to test the candidate's knowledge of SQL language, SQL data manipulation, and SQL data retrieval. 1z0-071 exam also covers topics such as database security, database design, and database management. 1z0-071 exam consists of multiple-choice questions, and candidates are required to score at least 63% to pass.

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Oracle 1z0-071 (Oracle Database SQL) certification exam is designed for database professionals who want to demonstrate their expertise in SQL development and database management. 1z0-071 exam will test the candidate's knowledge of SQL syntax, data manipulation language (DML), data definition language (DDL), and database security. 1z0-071 Exam also covers topics such as database objects, data modeling, and database administration. Passing 1z0-071 exam will prove that the candidate has the necessary skills to manage Oracle databases and to write efficient SQL queries.

Oracle Database SQL Sample Questions (Q70-Q75):

NEW QUESTION # 70
Examine the following query:
SQL> SELECT prod_id, amount_sold
FROM sales
ORDER BY amount_sold
FETCH FIRST 5 PERCENT ROWS ONLY;
What is the output of this query?

A. It displays 5 percent of the products with the highest amount sold.
B. It displays the first 5 percent of the rows from the SALES table.
C. It displays 5 percent of the products with the lowest amount sold.
D. It results in an error because the ORDER BY clause should be the last clause.

Answer: C

Explanation:
https://oracle-base.com/articles/12c/row-limiting-clause-for-top-n-queries-12cr1

NEW QUESTION # 71
Which three statements are correct regarding indexes? (Choose three.)

A. Indexes should be created on columns that are frequently referenced as part of any expression.
B. When a table is dropped, the corresponding indexes are automatically dropped.
C. For each DML operation performed, the corresponding indexes are automatically updated.
D. A non-deferrable PRIMARY KEYor UNIQUE KEYconstraint in a table automatically attempts to create a unique index.

Answer: B,C,D

Explanation:
Explanation/Reference:
References:
http://viralpatel.net/blogs/understanding-primary-keypk-constraint-in-oracle/

NEW QUESTION # 72
View the Exhibit and examine the structure of the SALES table.

The following query is written to retrieve all those product IDs from the SALES table that have more than
55000 sold and have been ordered more than 10 items.

Which statement is true regarding this SQL statement?

A. It produces an error because COUNT (*) should be only in the HAVING clause and not in the WHERE clause.
B. It executes successfully and generates the required result.
C. It executes successfully but produces no result because COUNT(prod_id) should be used instead of COUNT(*).
D. It produces an error because COUNT (*) should be specified in the SELECT clause also.

Answer: A

NEW QUESTION # 73
View the Exhibit and examine the structure of the EMPLOYEES table.
You want to display all employees and their managers having 100 as the MANAGER_ID. You want the output in two columns: the first column would have the LAST_NAME of the managers and the second column would have LAST_NAME of the employees.
Which SQL statement would you execute?

A. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
ON e.employee_id = m.manager_id
WHERE m.manager_id=100;
B. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
WHERE m.employee_id = e.manager_id AND e.manager_id=100;
C. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
ON m.employee_id = e.manager_id
WHERE m.manager_id=100;
D. SELECT m.last_name "Manager", e.last_name "Employee"
FROM employees m JOIN employees e
ON m.employee_id = e.manager_id
WHERE e.manager_id=100;

Answer: D

NEW QUESTION # 74
Evaluate the following statement: INSERT ALL WHEN order_total < 10000 THEN INTO small_orders WHEN order_total > 10000 AND order_total < 20000 THEN INTO medium_orders WHEN order_total > 2000000 THEN INTO large_orders SELECT order_id, order_total, customer_id FROM orders;
Which statement is true regarding the evaluation of rows returned by the subquery in the INSERT statement?

A. They are evaluated by the first WHEN clause. If the condition is true, then the row would be evaluated by the subsequent WHEN clauses.
B. They are evaluated by the first WHEN clause. If the condition is false, then the row would be evaluated by the subsequent WHEN clauses.
C. They are evaluated by all the three WHEN clauses regardless of the results of the evaluation of any other WHEN clause.
D. The INSERT statement would give an error because the ELSE clause is not present for support in case none of the WHEN clauses are true.

Answer: C

NEW QUESTION # 75
......

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