1z0-071 Exam - 1z0-071 Simulationsfragen

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Oracle 1z0-071 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Oracle Database SQL
Exam Number:	1z0-071
Exam Price:	$245 USD
Certificate Validity Period:	No expiration for this exam/certification
Available Languages:	Korean, Portuguese, Japanese, English, Simplified Chinese
Related Certifications:	Oracle Database Administrator Certified Associate (DBA) Oracle Database SQL Certified Associate
Passing Score:	63%
Real Exam Qty:	70
Exam Duration:	120 minutes
Exam Format:	Multiple Choice
Sample Questions:	Oracle 1z0-071 Sample Questions
Exam Way:	Pearson VUE testing center (online proctored option available)
Pre Condition:	No formal prerequisites required, but basic knowledge of relational database concepts is recommended
Official Syllabus URL:	https://education.oracle.com/oracle-database-sql-exam

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1z0-071 Simulationsfragen & 1z0-071 Vorbereitungsfragen

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Die Prüfung setzt sich aus 73 Multiple-Choice-Fragen zusammen und dauert 105 Minuten. Sie umfasst eine breite Palette von Themen, einschließlich SQL-Grundlagen, Datenmanipulationssprache (DML), Datenkontrollsprache (DCL) und Transaktionskontrollsprache (TCL). Es umfasst auch fortgeschrittene Themen wie Unterabfragen, Joins, Set-Operatoren und reguläre Ausdrücke.

Oracle Database SQL 1z0-071 Prüfungsfragen mit Lösungen (Q401-Q406):

401. Frage
Evaluate the following SELECTstatement and view the exhibit to examine its output:
SELECT constraint_name, constraint_type, search_condition, r_constraint_name, delete_rule, status, FROM user_constraints WHERE table_name = 'ORDERS';

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

A. In the second column, 'c'indicates a check constraint.
B. The STATUScolumn indicates whether the table is currently in use.
C. The column DELETE_RULEdecides the state of the related rows in the child table when the corresponding row is deleted from the parent table.
D. The R_CONSTRAINT_NAMEcolumn gives the alternative name for the constraint.

Antwort: A,C

402. Frage
Table EMPLOYEES contains columns including EMPLOYEE_ID, JOB_ID and SALARY.
Only the EMPLOYEE_ID column is indexed.
Rows exist for employees 100 and 200.
Examine this statement:

Which two statements are true? (Choose two.)

A. Employee 200 will have SALARY set to the same value as the SALARY of employee 100
B. Employee 100 will have SALARY set to the same value as the SALARY of employee 200
C. Employees 100 and 200 will have the same JOB_ID as before the update command
D. Employee 200 will have JOB_ID set to the same value as the JOB_ID of employee 100
E. Employees 100 and 200 will have the same SALARY as before the update command
F. Employees 100 will have JOB_ID set to the same value as the JOB_ID of employee 200

Antwort: B,F

403. Frage
View the Exhibit and examine the structure of the SALES table.

The following query is written to retrieve all those product IDs from the SALES table that have more than 55000 sold and have been ordered more than 10 items.

Which statement is true regarding this SQL statement?

A. It executes successfully and generates the required result.
B. It produces an error because COUNT (*) should be only in the HAVING clause and not in the WHERE clause.
C. It executes successfully but produces no result because COUNT(prod_id) should be used instead of COUNT(*).
D. It produces an error because COUNT (*) should be specified in the SELECT clause also.

Antwort: B

404. Frage
Which four statements are true about constraints on Oracle tables?

A. A Column can have only one CHECK Constraint.
B. A NOT NULL Constraint can be defined at the table level.
C. A PRIMARY KEY Constraint can be added after a table has been created and populated.
D. A UNIQUE Constraint can use a pre-existing index on the constrained column or columns.
E. A CHECK Constraint can refer to values in other rows.
F. A UNIQUE constraint permits NULLS.
G. A FOREIGN KEY Column can contain NULLS.

Antwort: C,D,F,G

405. Frage
Examine this statement:
SELECT last name
FROM employees
ORDER BY CASE WHEN salary = (SELECT MAX(salary) FROM employees)
THEN 'A'
ELSE last_ name
END ,last_name DESC;
Which two statements are true?

A. The names of employees earning the maximum salary will appear first In ascending order.
B. The names of employees earning the maximum salary will appear first in an unspecified order.
C. All remaining employee names will appear in ascending order.
D. The names of employees earning the maximum salary will appear first in descending order.
E. All remaining employee names will appear in descending order.
F. All remaining employee names will appear in an unspecified order.

Antwort: A,E

Begründung:
The ORDER BY clause with a CASE statement allows for conditional sorting based on the results of the CASE expression.
A). This is not true, as the 'A' in the THEN clause would cause the employees earning the maximum salary to be sorted at the top, but it does not determine the order in which their last names would appear.
B). This is true, the 'A' in the THEN clause will result in all maximum salary earners to be sorted at the top, and since 'A' comes before any last names alphabetically, they will be in ascending order.
C). This is not true, as the ELSE clause sorts the remaining employees by last_name but does not specify an order; hence, it defaults to ascending which contradicts the second part of the ORDER BY clause which specifies DESC.
D). This is not true, as the order of the remaining employee names is specified by the ORDER BY clause, which states last_name DESC.
E). This is true, after the employees with the maximum salary are sorted, the remaining employees' names will appear in descending order due to the last_name DESC in the ORDER BY clause.
F). This statement is not true as the specified 'A' in the CASE statement provides a definite order for employees earning the maximum salary.
References:
* Oracle Database SQL Language Reference, 12c Release 1 (12.1): "ORDER BY Clause"
* Oracle Database SQL Language Reference, 12c Release 1 (12.1): "CASE Expression"

406. Frage
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