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Oracle 1z0-071 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Oracle Database SQL
Exam Number:	1Z0-071
Certificate Validity Period:	18 months
Real Exam Qty:	63 - 78
Passing Score:	63%
Available Languages:	Korean, Japanese, Traditional Chinese, English, Spanish, Simplified Chinese
Exam Duration:	120 minutes
Exam Format:	Multiple Choice, Multiple Select
Exam Price:	US$245
Related Certifications:	Oracle Database Administrator Certified Associate Oracle Database Developer Certified Associate
Recommended Training:	Oracle Database SQL Fundamentals Oracle Database 19c: SQL Workshop
Exam Registration:	Oracle University Registration Pearson VUE Registration
Sample Questions:	Oracle 1z0-071 Sample Questions
Exam Way:	Online proctored or Onsite at Pearson VUE test centers
Pre Condition:	No mandatory prerequisites; basic knowledge of SQL and relational databases recommended
Official Syllabus URL:	https://education.oracle.com/pexam_1Z0-071

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To be eligible to take the Oracle 1z0-071 Exam, candidates must have a fundamental understanding of SQL and relational database concepts. They should also have a basic understanding of Oracle database architecture and be familiar with SQL developer tools. Candidates should also have practical experience in writing SQL statements and working with Oracle databases.

Oracle Database SQL Sample Questions (Q412-Q417):

NEW QUESTION # 412

Which three statements are true?

A. An index is created automatically in the MANAGER column.
B. The COMMISSION column can contain negative values .
C. The MANAGER column is a foreign key referencing the EMPNO column.
D. The DNAME column has a unique constraint.
E. The SALARY column must have a value .
F. The DEPTNO column in the EMP table can contain NULLS .
G. The DEPTNO column in the EMP table can contain the value 1.

Answer: C,E,G

Explanation:
A). The constraint commission < salary implies that COMMISSION must be less than SALARY, so it can have a negative value if the salary is greater than zero, making this statement true.
B). The constraint named CR_MGR is listed as a Referential (R) constraint on the MANAGER column, which implies it is a foreign key that would reference the EMPNO column, making this statement true.
C). The SALARY column is part of a Check (C) constraint CC_COMM that requires the SALARY to be greater than 100, which means it must have a value and cannot be NULL, making this statement true.
D). The presence of a foreign key constraint does not automatically create an index on the foreign key column.
While Oracle may implicitly create indexes for primary keys, it does not do so for foreign keys.
E). The constraint deptno > 9 prevents DEPTNO from containing values less than or equal to 9, so it cannot contain the value 1, making this statement false.
F). There is no NOT NULL constraint listed on the DEPTNO column in the constraints image, so it can contain NULL values, making this statement false.
G). There is no indication of a unique constraint on the DNAME column in the constraints image; the constraint DNAME IS NOT NULL only implies that the column cannot contain NULL values, making this statement false.
References:
* Oracle Database SQL Language Reference, 12c Release 1 (12.1): "Constraints"
* Oracle Database Concepts, 12c Release 1 (12.1): "Indexes and Index-Organized Tables"

NEW QUESTION # 413
View the Exhibit and examine the description of the tables.

You execute this SQL statement:

Which three statements are true?

A. The statement will execute successfully and a new row will be inserted into the SALES table.
B. The statement will fail if a row already exists in the SALES table for product 23.
C. The SALES table has five foreign keys.
D. A product can have a different unit price at different times.
E. The statement will fail because a subquery may not be contained in a VALUES clause.
F. A customer can exist in many countries.

Answer: A,C,F

NEW QUESTION # 414
Examine the data in the CUSTOMERStable:

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.) LEFT OUTER JOIN

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

Answer: A,C

NEW QUESTION # 415
Examine the description of the PRODCTS table which contains data:

Which two are true?

A. The PROD ID column can be renamed.
B. The PROD_ ID column data type can be changed to VARCHAR2 (2).
C. The PROD NAME column cannot have a DEFAULT clause added to it.
D. The EXPIRY DATE column data type can be changed to TIME STAMP.
E. The EXPIRY DATE column cannot be dropped.

Answer: A,D

NEW QUESTION # 416
Which three are true?

A. ADD_MONTHS works with a character string that can be implicitlyt converted to a DATE data type.
B. LAST_DAY returns the date of the last day of the current ,month onlyu.
C. LAST_DAY return the date of the last day the previous month only.
D. ADD_MONTHS adds a number of calendar months to a date.
E. CEIL requires an argument which is a numeric data type.
F. LAST_DAY returns the date of the last day of the month for the date argument passed to the function.
G. CEIL returns the largest integer less than or equal to a specified number.

Answer: D,E,F

NEW QUESTION # 417
......

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