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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q116-Q121):

NEW QUESTION # 116
Which two statements are true about Data Manipulation Language (DML) statements? (Choose two.)

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

Answer: D,E

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

NEW QUESTION # 117
You execute this command:
ALTER TABLE employees SET UNUSED(department_id)
Which two are true? (Choose two.)

A. A new column with the name DEPARTMENT_IDcan be added to the EMPLOYEEStable.
B. The storage space occupied by the DEPARTMENT_IDcolumn is released only after a COMMITis issued.
C. The DEPARTMENT_IDcolumn is set to null for all rows in the table.
D. A query can be display data from the DEPARTMENT_IDcolumn.
E. No updates can be made to the data in the DEPARTMENT_IDcolumn.
F. The DEPARTMENT_IDcolumn can be recovered from the recycle bin.

Answer: A,C

Explanation:
If a new column is added to a table, the column is initially NULL
Reference:
https://docs.oracle.com/cd/B28359_01/server.111/b28310/tables006.htm#ADMIN11005

NEW QUESTION # 118
Which two statements are true about sequences created in a single instance Oracle database? (Choose two.)

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

Answer: A,E

Explanation:
Explanation
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 # 119
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS:

You want to generate a report that shows all course IDs irrespective of whether they have corresponding department IDs or not but no department IDs if they do not have any courses.
Which SQL statement must you use?

A. SELECT c.course_id, d.department_id FROM course_details c RIGHT OUTER JOIN
.department_details d ON (c.depatrment_id=d.department_id)
B. SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN department_details d ON (c.department_id=d. department_id)
C. SELECT course_id, department_id, FROM department_details d RIGHT OUTER JOIN course_details c USING (department_id)
D. SELECT c.course_id, d.department_id FROM course_details c FULL OUTER JOIN department_details d ON (c.department_id<>d. department_id)

Answer: B

NEW QUESTION # 120
View the Exhibits and examine the structure of the COSTSand PROMOTIONStables.
You want to display PROD_IDSwhose promotion cost is less than the highest cost PROD_IDin a promotion time interval.
Examine this SQL statements:

What will be the result?
Exhibit 1.

Exhibit 2.

A. It gives an error because the ALL keyword is not valid
B. It executes successfully but does not give the required result
C. It executes successfully and gives the required result
D. It gives an error because the GROUP BY clause is not valid

Answer: C

NEW QUESTION # 121
......

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