Reliable 1z0-071 Test Forum, 1z0-071 Exam Book

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Oracle Database SQL Sample Questions (Q48-Q53):

NEW QUESTION # 48
Examine these two queries and their output:
SELECT deptno, dname FROM dept;

SELECT ename, job, deptno FROM emp ORDER BY deptno;

Now examine this query:
SELECT ename, dname
FROM emp CROSS JOIN dept WHERE job = 'MANAGER'
AND dept.deptno IN (10, 20) ;

A. 0
B. 1
C. 2
D. 3

Answer: C

NEW QUESTION # 49
You issued this command:
CHOOSE THREE
SQL > DROP TABLE employees;
Which three statements are true?

A. All indexes and constraints defined on the table being dropped are also dropped.
B. The EMPLOYEES table may be moved to the recycle bin.
C. The space used by the EMPLOYEES table is always reclaimed immediately.
D. If there is an uncommitted transaction in the session, it is committed.
E. The EMPLOYEES table can be recovered using the ROLLBACK command.
F. Sequences used in the EMPLOYEES table become invalid.

Answer: A,B,D

NEW QUESTION # 50
Which two statements are true about sequences created in a single instance Oracle database? (Choose two.)

A. The numbers generated by an explicitly defined sequence can only be used to insert data in one table.
B. DELETE <sequencename> would remove a sequence from the database.
C. When the MAXVALUE limit for a sequence is reached, it can be increased by using the ALTER SEQUENCE statement.
D. When a database instance shuts down abnormally, sequence numbers that have been cached but not used are available again when the instance is restarted.
E. CURRVAL is used to refer to the most recent sequence number that has been generated for a particular sequence.

Answer: C,E

Explanation:
Explanation
References:
http://docs.oracle.com/cd/E11882_01/server.112/e41084/statements_2012.htm#SQLRF00817
https://docs.oracle.com/cd/A84870_01/doc/server.816/a76989/ch26.htm

NEW QUESTION # 51
Examine this business rule:
Each student can work on multiple projects and each project can have multiple students. _ You must design an Entity Relationship (ER) model for optimal data storage and allow for generating reports in this format:
STUDEN_ID FIRST_NAMK LASTNAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true?

A. The ER must have a many-to-many relationship between the students and projects entitles tb.it must be resolved Into one-to-many relationships.
B. PORJECTI_ID must be the primary key In the projects entity and foreign key in the students The ER must have a one-to-many relationship between the students and projects entitles.
C. An associative table must be created with a composite key of student_id and project_id, which is the foreign key linked to the Stand projects entitles.
D. STUDENT_ID must be the primary key In the students entity and foreign key In the projects entity.

Answer: C

NEW QUESTION # 52
View the Exhibit and examine the details of the PRODUCT_INFORMATION table.
Exhibit

You must display PRODUCT_NAME from the table where the CATEGORY_ID column has values 12 or 13, and the SUPPLIER_ID column has the value 102088.
You executed this SQL statement:

Which statement is true regarding the execution?

A. It would execute but would return no rows.
B. It would not execute because the entire WHERE clause is not enclosed within parentheses.
C. It would not execute because the same column has been used twice with the AND logical operator.
D. It would execute and return the desired result.

Answer: A

NEW QUESTION # 53
......

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Oracle Database SQL Sample Questions (Q48-Q53):

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