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The Oracle 1z0-071 Exam covers a range of topics such as SQL SELECT statements, data manipulation, data control language, data definition language, and transaction control statements. Candidates are required to have a good understanding of SQL syntax, database objects, data modeling, and normalization concepts. 1z0-071 exam also tests the candidate's ability to write efficient and optimized SQL queries that can retrieve and manipulate data from the Oracle database. Candidates who pass the exam can demonstrate their ability to design, implement and manage Oracle databases, which can help them advance their careers in the field of database management.

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Oracle 1z0-071 Valid Exam Prep | 1z0-071 Cert

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Oracle Database SQL Sample Questions (Q318-Q323):

NEW QUESTION # 318
Which statement is true regarding the USINGclause in table joins? (Choose two.)

A. It can be used to join a maximum of three tables.
B. It can be used to access data from tables through equijoins as well as nonequijoins.
C. It can be used to restrict the number of columns used in a NATURALjoin.
D. It can be used to join tables that have columns with the same name and compatible data types.

Answer: C,D

Explanation:
Explanation

NEW QUESTION # 319
Examine the data in the ENPLOYEES table:

Which statement will compute the total annual compensation tor each employee

A. SECECT last_namo, (menthy_salary + monthly_commission_pct) * 12 AS annual_comp FROM employees;
B. SELCECT last_namo, (monthly_salary * 12) + (monthly_commission_pct * 12) AS annual_comp FROM employees
C. SELCECT last_namo, (monthly_salary * 12) + (menthy_salary * 12 * NVL (monthly_commission_pct, 0)) AS annual_comp FROM employees
D. SELCECT last_namo, (monthly_salary * 12) + (menthy_salary * 12 * monthly_commission_pct) AS annual_comp FROM employees

Answer: C

NEW QUESTION # 320
Which three statements are true about multiple-row subqueries? (Choose three.)

A. They can return only one column but multiple rows.
B. They cannot contain a subquery within a subquery.
C. They can contain group functions and GROUP BY and HAVING clauses.
D. They can return multiple columns as well as rows.
E. They can contain group functions and the GROUP BY clause, but not the HAVING clause.
F. They can contain a subquery within a subquery.

Answer: C,D,F

NEW QUESTION # 321
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. A VARCHAR2 column definition does not require the length to be specified
C. A BLOB stores unstructured binary data within the database
D. A CHAR column definition does not require the length to be specified
E. A BFILE stores unstructured binary data in operating systerm files
F. The default length for a CHAR column is always one character

Answer: C,E,F

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.
References:
* Oracle Documentation on Data Types: Data Types
* Oracle Documentation on LOBs: LOBs
* Oracle Documentation on Character Data Types: Character Data Types

NEW QUESTION # 322
Examine the business rule:
Each student can work on multiple projects and each project can have multiple students.
You need to design an Entity Relationship Model (ERD) for optimal data storage and allow for generating reports in this format:
STUDENT_ID FIRST_NAME LAST_NAME PROJECT_ID PROJECT_NAME PROJECT_TASK
Which two statements are true in this scenario? (Choose two.)

A. An associative table must be created with a composite key of STUDENT_ID and PROJECT_ID, which is the foreign key linked to the STUDENTS and PROJECTS entities.
B. The ERD must have a M:M relationship between the STUDENTSand PROJECTSentities that must be resolved into 1:M relationships.
C. STUDENT_IDmust be the primary key in the STUDENTSentity and foreign key in the PROJECTSentity.
D. PROJECT_IDmust be the primary key in the PROJECTSentity and foreign key in the STUDENTSentity.
E. The ERD must have a 1:M relationship between the STUDENTSand PROJECTSentities.

Answer: A,B

Explanation:
Explanation/Reference:
References:
http://www.oracle.com/technetwork/issue-archive/2011/11-nov/o61sql-512018.html

NEW QUESTION # 323
......

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