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Oracle 1z1-071 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Oracle Database SQL
Exam Number:	1Z0-071
Exam Price:	USD 245 (varies by country/region)
Exam Format:	Multiple Response, Computer-based exam, Multiple Choice, Proctored exam
Available Languages:	Portuguese, Spanish, Chinese (Simplified), Japanese, English
Certificate Validity Period:	Non-expiring (Oracle certification policy subject to change)
Exam Duration:	120 minutes
Related Certifications:	Oracle Database Development certifications Oracle Database Administrator Certified Associate
Recommended Training:	Oracle Database SQL Training
Exam Registration:	Oracle Certification Registration
Sample Questions:	Oracle 1z1-071 Sample Questions
Exam Way:	Online proctored or test center delivery depending on region
Pre Condition:	No formal prerequisites required; basic knowledge of relational databases and SQL recommended.
Official Syllabus URL:	https://education.oracle.com/oracle-database-sql/pexam_1Z0-071

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Oracle Database SQL exam, also known as 1z1-071, is a certification exam that validates the skills and knowledge of professionals who want to work with Oracle Database SQL. It tests the candidate's ability to write SQL queries to retrieve data from a database, manipulate and analyze data, and create database objects such as tables, views, and indexes.

Oracle Database SQL Sample Questions (Q320-Q325):

NEW QUESTION # 320
You are designing the structure of a table in which two columns have the specifications:
COMPONENT_ID - must be able to contain a maximum of 12 alphanumeric
characters and uniquely identify the row
EXECUTION_DATETIME - contains Century, Year, Month, Day, Hour, Minute,
Second to the maximum precision and is used for calculations and
comparisons between components.
Which two options define the data types that satisfy these requirements most efficiently?

A. The EXECUTION _DATETIME must be of TIMESTAMP data type.
B. The COMPONENT_ID must be of ROWID data type.
C. The EXECUTION_DATATIME must be of DATE data type.
D. The COMPONENT_ID column must be of CHAR data type.
E. The COMPONENT_ID must be of VARCHAR2 data type.
F. The EXECUTION_DATETIME must be of INTERVAL DAY TO SECOND data type.

Answer: C,E

NEW QUESTION # 321
In which three situations does a transaction complete? (Choose three.)

A. when a data definition language (DDL) statement is executed
B. when a DELETE statement is executed
C. when a PL/SQL anonymous block is executed
D. when a TRUNCATE statement is executed after the pending transaction
E. when a ROLLBACK command is executed

Answer: A,D,E

Explanation:
Explanation
References:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm

NEW QUESTION # 322
Examine the data in the NEW_EMPLOYEES table:

Examine the data in the EMPLOYEES table:

You want to:
1. Update existing employee details in the EMPLOYEES table with data from the NEW EMPLOYEES table.
2. Add new employee detail from the NEW_ EMPLOYEES able to the EMPLOYEES table.
Which statement will do this:

A. MERGE INTO employees e
USING new employees ne
ON (e.employee_id = ne.employee_id)
WHEN FOUND THEN
UPDATE SET e.name =ne.name, e.job_id=ne.job_id, e.salary =ne.salary
WHEN NOT FOUND THEN
INSERT VALUES (ne.employee_id,ne.name,ne.job_id,ne.salary) ;
B. MERGE INTO employees e
USING new employees ne
WHERE e.employee_id = ne.employee_ id
WHEN MATCHED THEN
UPDATE SET e.name = ne.name, e.job_id = ne.job_id,e.salary =ne. salary
WHEN NOT MATCHED THEN
INSERT VALUES (ne. employee_id,ne.name, ne.job_id,ne.salary) ;
C. MERGE INTO employees e
USING new_employees n
WHERE e.employee_id = ne.employee_id
WHEN FOUND THEN
UPDATE SET e.name=ne.name,e.job_id =ne.job_id, e.salary=ne.salary
WHEN NOT FOUND THEN
INSERT VALUES (ne.employee_ id,ne.name,ne.job id,ne.salary) ;
D. MERGE INTO employees e
USING new_employees n
ON (e.employee_id = ne.employee_id)
WHEN MATCHED THEN
UPDATE SET e.name = ne.name, e.job id = ne.job_id,e.salary =ne. salary
WHEN NOT MATCHED THEN
INSERT VALUES (ne. employee_id,ne.name,ne.job_id,ne.salary);

Answer: D

Explanation:
The correct answer to perform the specified update and insert operations is to use the MERGE statement, which is designed to facilitate such "upsert" operations (update or insert).
A . The syntax is incorrect; the WHERE clause is not used with MERGE.
B . This is the correct syntax and use of the MERGE statement. It uses the ON clause to specify the join condition, and it provides actions for WHEN MATCHED and WHEN NOT MATCHED situations.
C . The keywords FOUND and NOT FOUND are not valid in the context of the MERGE statement in Oracle SQL.
D . Similar to option A, the syntax is incorrect because MERGE uses an ON clause, not a WHERE clause, and the keywords FOUND and NOT FOUND are incorrect.
The correct syntax of a MERGE statement includes defining a condition using the ON clause to determine how rows from the source and target tables are matched, then specifying the actions for when rows match (WHEN MATCHED) and when they do not match (WHEN NOT MATCHED).
Reference:
Oracle Documentation on MERGE: https://docs.oracle.com/database/121/SQLRF/statements_9016.htm#SQLRF01606

NEW QUESTION # 323
Which two statements are true about the DUAL table?

A. It can display multiple rows but only a single column.
B. It can be accessed only by the SYS user.
C. It can be used to display only constants or pseudo columns.
D. It can be accessed by any user who has the SELECT privilege in any schema.
E. It consists of a single row and single column of VARCHAR2 data type.
F. It can display multiple rows and columns.

Answer: D,E

NEW QUESTION # 324
View the Exhibit and examine the data in the PRODUCTS table.

You must display product names from the PRODUCTS table that belong to the 'Software/other' category with minimum prices as either $2000 or $4000 and with no unit of measure.
You issue this query:

Which statement is true?

A. It executes successfully but returns no result.
B. It generates an error because the condition specified for the PROD_CATEGORY column is not valid.
C. It generates an error because the condition specified for PROD_UNIT_OF_MEASURE is not valid.
D. It executes successfully and returns the required result.

Answer: A

NEW QUESTION # 325
......

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