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Oracle 1Z0-071 Certification Exam Reference

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Oracle 1z0-071 is a certification exam that focuses on the fundamentals of SQL and relational database management using Oracle Database. 1z1-071 exam is designed to test the knowledge and skills of candidates in the area of SQL and database management. Passing 1z1-071 Exam is a requirement for obtaining the Oracle Database SQL certification, which is a valuable asset for professionals working in the database administration field.

Oracle Database SQL Sample Questions (Q24-Q29):

NEW QUESTION # 24
The PRODUCT_INFORMATION table has a UNIT_PRICE column of data type NUMBER (8, 2).
Evaluate this SQL statement:
SELECT TO_CHAR(unit_price, `$9,999') FROM product_information;
Which two statements are true about the output? (Choose two.)

A. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as #######.
B. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as $1,0236.
C. A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,024.
D. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as $1,023.
E. A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,023.

Answer: A,E

NEW QUESTION # 25
Whith three statements are true about built in data types?

A. A VARCHAR2 blank pads column values only if the data stored is non numeric and contains no special characlers
B. The default length for a CHAR column is always one character
C. A CHAR column definition does not require the length to be specified
D. A BFILE stores unstructured binary data in operating systerm files
E. A BLOB stores unstructured binary data within the database
F. A VARCHAR2 column definition does not require the length to be specified

Answer: B,D,E

Explanation:
The true statements about built-in data types in Oracle are:
B: A BFILE is a data type in Oracle that allows for a read-only link to binary files stored outside the database in the operating system. This is correct as per Oracle's documentation.
D: The default length for a CHAR column, when not specified, is one character. This is according to the Oracle SQL standard.
F: A BLOB is used for storing binary data within the Oracle database, allowing for storage of large amounts of unstructured binary data.
The incorrect options are:
A: A VARCHAR2 column does not blank-pad values; it is CHAR that may blank-pad to the fixed length.
C: A CHAR column requires a length specification, although if omitted, the default is one character.
E: A VARCHAR2 column requires a length specification; without it, the statement will fail.
Reference:
Oracle Documentation on Data Types: Data Types
Oracle Documentation on LOBs: LOBs
Oracle Documentation on Character Data Types: Character Data Types

NEW QUESTION # 26
Examine the data in the CUSTOMERS table:

You want to list all cities that have more than one customer along with the customer details.
Evaluate the following query:

Which two JOIN options can be used in the blank in the above query to give the correct output? (Choose two.)

A. NATURAL JOIN
B. JOIN
C. RIGHT OUTER JOIN
D. LEFT OUTER JOIN
E. FULL OUTER JOIN

Answer: B,C

NEW QUESTION # 27
Examine the structure of the SALES table.

Examine this statement:

Which two statements are true about the SALES1 table? (Choose two.)

A. It will not be created because the column-specified names in the SELECT and CREATE TABLE clauses do not match.
B. It will not be created because of the invalid WHERE clause.
C. It will have NOT NULL constraints on the selected columns which had those constraints in the SALES table.
D. It has PRIMARY KEY and UNIQUE constraints on the selected columns which had those constraints in the SALES table.
E. It is created with no rows.

Answer: C,E

NEW QUESTION # 28
A non-correlated subquery can be defined as __________. (Choose the best answer.)

A. A SELECT statement that can be embedded in a clause of another SELECT statement only.
B. A set of sequential queries, all of which must always return a single value.
C. A set of one or more sequential queries in which generally the result of the inner query is used as the search value in the outer query.
D. A set of sequential queries, all of which must return values from the same table.

Answer: C

Explanation:
Explanation/Reference:

NEW QUESTION # 29
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