Download Oracle Datbase 12c SQL.1z0-071.ExamLabs.2019-11-13.182q.vcex

Vendor:	Oracle
Exam Code:	1z0-071
Exam Name:	Oracle Datbase 12c SQL
Date:	Nov 13, 2019
File Size:	19 MB

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Demo Questions

Which three statements are true regarding the WHERE and HAVING clauses in a SQL statement? (Choose three.)

WHERE and HAVING clauses cannot be used together in a SQL statement.
The HAVING clause conditions can have aggregate functions.
The HAVING clause conditions can use aliases for the columns.
The WHERE clause is used to exclude rows before the grouping of data.
The HAVING clause is used to exclude one or more aggregated results after grouping data.

Correct answer: BDE

Which statement is true regarding external tables?

The CREATE TABLE AS SELECT statement can be used to upload data into a normal table in the database from an external table.
The data and metadata for an external table are stored outside the database.
The default REJECT LIMIT for external tables is UNLIMITED.
ORACLE_LOADER and ORACLE_DATAPUMP have exactly the same functionality when used with an external table.

Correct answer: A

Explanation:

References:https://docs.oracle.com/cd/B28359_01/server.111/b28310/tables013.htm

References:

https://docs.oracle.com/cd/B28359_01/server.111/b28310/tables013.htm

Which two statements are true about Data Manipulation Language (DML) statements?

An INSERT INTO...VALUES.. statement can add multiple rows per execution to a table.
An UPDATE... SET... statement can modify multiple rows based on multiple conditions on a table.
A DELETE FROM..... statement can remove rows based on only a single condition on a table.
An INSERT INTO... VALUES..... statement can add a single row based on multiple conditions on a table.
A DELETE FROM..... statement can remove multiple rows based on multiple conditions on a table.
An UPDATE....SET.... statement can modify multiple rows based on only a single condition on a table.

Correct answer: BE

Explanation:

References:http://www.techonthenet.com/sql/and_or.php

References:

http://www.techonthenet.com/sql/and_or.php

Which two statements are true regarding roles? (Choose two.)

A role can be granted to itself.
A role can be granted to PUBLIC.
A user can be granted only one role at any point of time.
The REVOKE command can be used to remove privileges but not roles from other users.
Roles are named groups of related privileges that can be granted to users or other roles.

Correct answer: BE

Explanation:

References:http://docs.oracle.com/cd/E25054_01/network.1111/e16543/authorization.htm#autoId28

References:

http://docs.oracle.com/cd/E25054_01/network.1111/e16543/authorization.htm#autoId28

Which two statements are true regarding constraints? (Choose two)

A constraint is enforced only for an INSERT operation on a table.
A foreign key cannot contain NULL values.
A column with the UNIQUE constraint can store NULLS.
You can have more than one column in a table as part of a primary key.

Correct answer: CD

You want to display 5 percent of the rows from the SALES table for products with the lowest AMOUNT_SOLD and also want to include the rows that have the same AMOUNT_SOLD even if this causes the output to exceed 5 percent of the rows.

Which query will provide the required result?

SELECT prod_id, cust_id, amount_sold
FROM sales
ORDER BY amount_sold
FETCH FIRST 5 PERCENT ROWS WITH TIES;
SELECT prod_id, cust_id, amount_sold
FROM sales
ORDER BY amount_sold
FETCH FIRST 5 PERCENT ROWS ONLY WITH TIES;
SELECT prod_id, cust_id, amount_sold
FROM sales
ORDER BY amount_sold
FETCH FIRST 5 PERCENT ROWS WITH TIES ONLY;
SELECT prod_id, cust_id, amount_sold
FROM sales
ORDER BY amount_sold
FETCH FIRST 5 PERCENT ROWS ONLY;

Correct answer: A

Examine the structure of the MEMBERS table:

You execute the SQL statement:

SQL > SELECT member_id, ' ' , first_name, ' ' , last_name "ID FIRSTNAME LASTNAME " FROM members;

What is the outcome?

It fails because the alias name specified after the column names is invalid.
It fails because the space specified in single quotation marks after the first two column names is invalid.
It executes successfully and displays the column details in a single column with only the alias column heading.
It executes successfully and displays the column details in three separate columns and replaces only the last column heading with the alias.

Correct answer: D

You issue the following command to drop the PRODUCTS table:

SQL > DROP TABLE products;

Which three statements are true about the implication of this command? (Choose three.)

All data along with the table structure is deleted.
A pending transaction in the session is committed.
All indexes on the table remain but they are invalidated.
All views and synonyms on the table remain but they are invalidated.
All data in the table is deleted but the table structure remains.

Correct answer: ABD

You execute the following commands:

SQL > DEFINE hiredate = '01-APR-2011'

SQL >SELECT employee_id, first_name, salary

FROM employees

WHERE hire_date > '&hiredate'

AND manager_id > &mgr_id;

For which substitution variables are you prompted for the input?

none, because no input required
both the substitution variables ''hiredate' and 'mgr_id'.
only hiredate'
only 'mgr_id'

Correct answer: D

View the Exhibit and examine the structure of ORDERS and ORDER_ITEMS tables.

ORDER_ID is the primary key in the ORDERS table. It is also the foreign key in the ORDER_ITEMS table wherein it is created with the ON DELETE CASCADE option.

Which DELETE statement would execute successfully?