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Oracle 1z0-071 Exam Syllabus Topics:

Section	Objectives
SQL Functions	- Conversion and conditional functions 1. TO_CHAR, TO_NUMBER, CASE expressions - Single-row functions 1. Character, numeric, date functions
SQL Retrieval	- SELECT statements and filtering data 1. WHERE clause and conditions 2. ORDER BY and row limiting - Joins and set operations 1. UNION, INTERSECT, MINUS 2. INNER, OUTER, CROSS joins
Subqueries and Advanced SQL	- Single-row and multi-row subqueries - Correlated subqueries and nested queries
Relational Database Concepts	- Data types and database objects overview - Tables, rows, columns, and relational model basics
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 (Q109-Q114):

NEW QUESTION # 109
View the Exhibit and examine the structure of the CUSTOMERS table.

Using the CUSTOMERS table, you must generate a report that displays a credit limit increase of 15% for all customers.
Customers with no credit limit should have "Not Available" displayed.
Which SQL statement would produce the required result?

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

Answer: A

NEW QUESTION # 110
In which three situations does a transaction complete?

A. when a DELETEstatement is executed
B. when a PL/SQL anonymous block is executed
C. when a data definition language (DDL) statement is executed
D. when a ROLLBACKcommand is executed
E. when a TRUNCATEstatement is executed after the pending transaction

Answer: C,D,E

Explanation:
Explanation
Explanation/Reference:
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm

NEW QUESTION # 111
Examine the data in the COLORS table:

Examine the data in the BRICKS table:

Which two queries return all the rows from COLORS?

A. SELECT
EROM colors C
LEFT JOIN bricks on
USING (rgb _ hex_ value) ;
B. SELECT *
EROM bricks | b
JOIN colors C
ON b. color_ rgb_ hex_ value =c. rgb _hex value;
C. SELECT.
FROM bricks b
RIGHT JOIN colors c
ON b. color _rgb_ hex_ value = c. rgb hex_ value;
D. SELECT
EROM colors C
LEET JOIN bricks b
ON b. color_ rgb_ hex value = c. rgb. hex.
E. SELECT
FROM bricks b
FULL JOIN colors C
ON b. color rgb _ hex_ value = c. rgb _hex_ value;

Answer: A,C

Explanation:
value
WHERE b. brick_ id > 0;
Explanation:
The queries that will return all the rows from the COLORS table are those that ensure every record from COLORS is selected, regardless of whether there's a matching record in the BRICKS table:
Option A:
SELECT * FROM bricks b RIGHT JOIN colors c ON b.color_rgb_hex_value = c.rgb_hex_value; A right join will return all the rows from the right table (COLORS), with the matching rows from the left table (BRICKS). If there is no match, NULL will be returned for columns from BRICKS.
Option B:
SELECT * FROM colors c LEFT JOIN bricks b USING (rgb_hex_value);
A left join will return all the rows from the left table (COLORS), with the matching rows from the right table (BRICKS). If there is no match, NULL will be returned for columns from BRICKS. The USING clause indicates a join condition where columns with the same names are compared for equality.
Options C, D, and E will not return all the rows from the COLORS table:
Option C: The full join will return all rows from both tables, but it is not restricted to only the rows from COLORS.
Option D: An inner join will return only the matching rows between both tables, not all rows from COLORS.
Option E: This is a left join, which would typically return all rows from COLORS, but the WHERE clause restricts the result set to only those rows from COLORS that have a matching BRICK_ID in BRICKS which is greater than 0, potentially excluding rows from COLORS.

NEW QUESTION # 112
Which two statements are true about the data dictionary? (Choose two.)

A. The data dictionary is accessible when the database is closed.
B. Views with the prefix ALL_ display metadata for objects to which the current user has access.
C. Views with the prefix DBA_ display only metadata for objects in the SYS schema.
D. The data dictionary does not store metadata in tables.
E. Views with the prefix ALL_, DBA_ and USER_ are not all available for every type of metadata.

Answer: B,C

Explanation:
ALL_ -include objects all objects (from all schemas) accessible to the current user.
https://dataedo.com/blog/useful-oracle-data-dictionary-queries-every-dba-should-have
https://docs.oracle.com/cd/E11882_01/server.112/e40540/datadict.htm

NEW QUESTION # 113
Which two statements are true about views?

A. Tables in the defining query of a view must always exist in order to create the view.
B. Views can be updated without the need to re-grant privileges on the view.
C. The wITH CHECK clause prevents certain rows from being displayed when querying the view.
D. Views can be indexed.
E. Theethi CHEcK clause prevents certalin rows from being updated or inserted in the underying table through the view.

Answer: A,B

Explanation:
Views in Oracle have specific properties regarding how they can be used and what limitations apply to them:
A . Oracle does not allow indexing directly on views. However, a view can display data from indexed tables.
B . The WITH CHECK OPTION clause on a view prevents DML operations that would result in rows that do not satisfy the view's filter criteria. It doesn't prevent certain rows from being updated or inserted in the underlying table through the view per se.
C . The tables (or other views) referenced in the creating query of a view must exist at the time the view is created, making this statement true.
D . Views do not require privileges to be re-granted when the view is updated; they are separate from the underlying object privileges, making this statement true.
E . The WITH CHECK OPTION clause is used to ensure that all data modifications through the view are consistent with the view's defining query, not to prevent rows from being displayed.
Reference:
Oracle Database SQL Language Reference, 12c Release 1 (12.1): "CREATE VIEW" Oracle Database Concepts, 12c Release 1 (12.1): "Views"

NEW QUESTION # 114
......

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