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Oracle 1z1-071 exam tests candidates on a variety of topics, including SQL data retrieval, data manipulation, DDL and DML operations, database security, and performance tuning. 1z1-071 Exam consists of 73 multiple-choice questions and has a time limit of 100 minutes. Candidates must score at least 66% to pass the exam.

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Oracle 1z1-071, also known as the Oracle Database SQL exam, is a certification exam designed to assess the knowledge and skills of individuals working with the Oracle Database SQL. 1z1-071 exam is intended for database administrators, database developers, and business analysts who work with Oracle SQL. Passing 1z1-071 Exam demonstrates that an individual has the necessary skills required to become an Oracle Certified Associate (OCA) in Oracle Database SQL.

Oracle Database SQL Sample Questions (Q352-Q357):

NEW QUESTION # 352
Examine the data in the COLORS table:

Examine the data in the BRICKS table:

Which two queries return all the rows from COLORS?

A. AIl conditions evaluated using DECODE can also be evaluated using CASE.
B. CASE is a function and DECODE is not.
C. DECODE is a function and CASE is not.
D. Neither CASE nor DECODE is a function.
E. Both CASE and DECODE are functions.
F. All conditions evaluated using CASE can also be evaluated using DECODE.

Answer: C,F

NEW QUESTION # 353
Examine the structure of the ORDERS table: (Choose the best answer.)
You want to find the total value of all the orders for each year and issue this command:
SQL> SELECT TO_CHAR(order_date,'rr'), SUM(order_total) FROM orders
GROUP BY TO_CHAR(order_date, 'yyyy');
Which statement is true regarding the result?

A. It executes successfully but does not give the correct output.
B. It returns an error because the TO_CHAR function is not valid.
C. It return an error because the datatype conversion in the SELECT list does not match the data type conversion in the GROUP BY clause.
D. It executes successfully but gives the correct output.

Answer: C

NEW QUESTION # 354
Examine the structure of the BOOKS_TRANSACTIONS table:

Examine the SQL statement:

Which statement is true about the outcome?

A. It displays details for only members A101 and A102 who have borrowed before today with RM .
TRANSACTION_TYPE
B. It displays details for members who have borrowed before today's date with either RM as or MEMBER_ID as A101 and A102.
TRANSACTION_TYPE
C. It displays details only for members who have borrowed before today with RM as .
TRANSACTION_TYPE
D. It displays details for members who have borrowed before today with RM as TRANSACTION_TYPE and the details for members A101 or A102.

Answer: D

NEW QUESTION # 355
Examine this statement:
CREATE TABTE orders
(sarial_no NUMBER UNIQUE,
order_id NUMBER PRIMARY KEY ,
order_date DATE NOT NULL,
status VARCHAR2 (10) CHECK (status IN ('CREDIT', 'CASH')),
product_id NUMBER REFERENCES products (product_id),
order_ total NUMBER);
On which two columns of the table will an index be created automatically?

A. ORDER_DATE
B. ORDER TOTAL
C. ORDER_ ID
D. STATUS
E. PRODUCT_ ID
F. SERIAL_NO

Answer: C,F

Explanation:
An index is created automatically on columns that are defined with a UNIQUE constraint and a PRIMARY KEY constraint.
A). True. Since the serial_no column is defined with a UNIQUE constraint, Oracle will automatically create an index for this column.
E). True. The order_id column is defined with a PRIMARY KEY constraint, and Oracle automatically creates a unique index on the primary key column.

NEW QUESTION # 356
Which two statements are true about the results of using the intersect operator in compound queries?

A. intersect returns rows common to both sides of the compound query.
B. Reversing the order of the intersected tables can sometimes affect the output.
C. intersect ignores nulls.
D. The number of columns in each select in the compound query can be different.
E. Column names in each select in the compound query can be different.

Answer: A,E

Explanation:
C). True, the names of the columns in each SELECT statement of an INTERSECT query do not need to match, as long as the data types and order of the columns correspond.D. True, the INTERSECT operator returns only the rows that are common to both SELECT statements, effectively acting as a set intersection of the results from both queries.
References:
* Oracle documentation on INTERSECT operator: Oracle Database SQL Language Reference
* Detailed behavior of INTERSECT: Oracle Compound Queries

NEW QUESTION # 357
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