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Format of ORACLE 1z0-071 Certification Exam

The ORACLE 1z0-071 exam will include the following sections:

Section 3: Oracle Database Administration and Management
Section 1: Basic Concepts and Principles
Section 2: Oracle Database SQL Language and Data Structures
Section 4: Data Integrity, Security, and Backup Methods.

ORACLE 1z0-071 Exams questions will be in the form of Multiple choice, and the passing score for winning the certification is 63%. If you will not be able to score the required percentage, you will not be entertained with the certification. Don't worry, Oracle 1z0-071 Dumps will help you to get a score in the exam.

Oracle 1z1-071 exam is an excellent option for individuals who want to improve their career prospects in the database management field. It is also a great opportunity for those who want to enhance their skills and knowledge of SQL. Oracle Database SQL certification is highly valued by employers and can lead to better job opportunities and higher salary packages.

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Oracle Database SQL Sample Questions (Q14-Q19):

NEW QUESTION # 14
Which three statements are true about indexes and their administration in an Oracle database?

A. An index can be created as part of a CREATE TABLE statement.
B. A DROP INDEX statement always prevents updates to the table during the drop operation
C. An INVISIBLE index is not maintained when Data Manipulation Language (DML) is performed on its underlying table.
D. If a query filters on an indexed column then it will always be used during execution of the query
E. A descending index is a type of function-based index
F. A UNIQUE and non-unique index can be created on the same table column

Answer: A,E,F

Explanation:
A . This statement is incorrect. An INVISIBLE index is maintained during DML operations just like a VISIBLE index. The difference is that an INVISIBLE index is not used by the optimizer unless explicitly hinted. B. This statement is correct. When creating a table, you can define indexes on one or more columns as part of the table definition. C. This statement is incorrect. While a DROP INDEX statement will drop the index, it does not always prevent updates to the table. If the index is marked as unusable or is an invisible index, for example, updates can still be performed. D. This statement is correct. It is possible to have both a UNIQUE index and a non-unique index on the same column. The UNIQUE index enforces the uniqueness of column values, while the non-unique index does not. E. This statement is correct to some extent. Descending indexes are not function-based indexes per se, but they are indexes on which the data is sorted in descending order, as opposed to the default ascending order. However, descending indexes are conceptually related to function-based indexes because they alter the way the indexed data is stored. F. This statement is incorrect. The use of an index in query execution depends on the optimizer's decision, which is based on statistics and the cost associated with using the index. There are situations where the optimizer may choose a full table scan even if there is an index on the filter column.
Reference can be found in the Oracle Database Concepts Guide and the SQL Language Reference documentation, which detail the behavior of indexes and how they are managed within the Oracle database.

NEW QUESTION # 15
Which two statements are true regarding the USING and ON clauses in table joins?

A. A maximum of one pair of columns can be joined between two tables using the ON clause.
B. Both USING and ON clauses can be used for equijoins and nonequijoins.
C. The ON clause can be used to join tables on columns that have different names but compatible data types.
D. The WHERE clause can be used to apply additional conditions in SELECT statements containing the ON or the USING clause.

Answer: C,D

NEW QUESTION # 16
View and Exhibit and examine the structure and data in the INVOICEtable.

Which two statements are true regarding data type conversion in query expressions? (Choose two.)

A. inv_amt = '0255982': requires explicit conversion
B. inv_date > '01-02-2008': uses implicit conversion
C. inv_no BETWEEN '101' AND '110': uses implicit conversion
D. inv_date = '15-february-2008':uses implicit conversion
E. CONCAT(inv_amt, inv_date): requires explicit conversion

Answer: C,D

NEW QUESTION # 17
Which three are true about granting object privileges on tables, views, and sequences?

A. ALTER can be granted only on tables and sequences.
B. DELETE can be granted on tables, views, and sequences.
C. INSERT can be granted on tables, views, and sequences.
D. REFERENCES can be granted only on tables and views.
E. SELECT can be granted only on tables and views.
F. UPDATE can be granted only on tables and views.

Answer: A,D,E

Explanation:
In Oracle Database, object privileges are rights to perform a particular action on a specific object in the database. Here's why the other options are incorrect:
A). UPDATE can be granted on tables, views, and materialized views, but not sequences. B. DELETE cannot be granted on sequences because sequences do not store data that can be deleted. D. INSERT cannot be granted on sequences; sequences are used to generate numbers, not to be inserted into directly. C.
REFERENCES allows the grantee to create a foreign key that references the table or the columns of the table.
It is applicable only to tables and views. E. SELECT can indeed only be granted on tables and views (including materialized views). F. ALTER is an object privilege that can be granted on tables and sequences but not views.
For more details, one may refer to the Oracle Database SQL Language Reference documentation, which specifies the types of object privileges and the objects they apply to.

NEW QUESTION # 18
The user SCOTT who is the owner of ORDERS and ORDER_ITEMS tables issues this GRANT command:
GRANT ALL
ON orders, order_items
TO PUBLIC;
What must be done to fix the statement?

A. PUBLIC should be replaced with specific usernames.
B. ALL should be replaced with a list of specific privileges.
C. Separate GRANT statements are required for the ORDERS and ORDER_ITEMS tables.
D. WITH GRANT OPTION should be added to the statement.

Answer: C

Explanation:
References:
http://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqljgrant.html

NEW QUESTION # 19
......

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