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Oracle 1z0-071 Exam Overview:

Certification Vendor:	Oracle
Exam Name:	Oracle Database SQL
Exam Number:	1Z0-071
Exam Duration:	120 minutes
Passing Score:	63%
Certificate Validity Period:	18 months
Real Exam Qty:	63 - 78
Exam Price:	US$245
Related Certifications:	Oracle Database Developer Certified Associate Oracle Database Administrator Certified Associate
Exam Format:	Multiple Select, Multiple Choice
Available Languages:	English, Japanese, Simplified Chinese, Korean, Spanish, Traditional Chinese
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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Oracle Database SQL Sample Questions (Q112-Q117):

NEW QUESTION # 112
Which three actions can you perform on an existing table containing data? (Choose three.)

A. Add a new column as the table's first column
B. Change the default value of a column
C. Increase the width of a numeric column
D. Define a default value that is automatically inserted into a column containing nulls
E. Change a DATE column containing data to a NUMBER data type
F. Add a new NOT NULL column with a DEFAULT value

Answer: A,B

Explanation:
Explanation/Reference: https://docs.oracle.com/javadb/10.8.3.0/ref/rrefsqlj24513.html

NEW QUESTION # 113
Which three statements are true about defining relations between tables in a relational database?

A. Every foreign key value must refer to a matching primary or unique key value.
B. Every primary or unique key value must refer to a matching foreign key value.
C. Foreign key columns allow null values.
D. Primary key columns allow null values.
E. Unique key columns allow null values

Answer: A,C

Explanation:
A). Correct. Foreign key constraints can be nullable. This allows the possibility of a row not having a link to another table. B. Incorrect. Unique key constraints do not allow multiple rows to have null values unless the constraint is defined on multiple columns. C. Incorrect. Primary key columns must be NOT NULL and unique across the table. D. Incorrect. Primary or unique key values do not refer to foreign keys; it's the foreign keys that refer to primary or unique keys. E. Correct. Foreign key constraints enforce referential integrity by requiring that each foreign key value matches a primary or unique key value in the related table.
These are standard rules in relational databases, which can be confirmed in the Oracle Database Concepts Guide.

NEW QUESTION # 114
View the Exhibits and examine PRODUCTS and SALES tables.
Exhibit 1

Exhibit 2

You issue the following query to display product name the number of times the product has been sold:

What happens when the above statement is executed?

A. The statement produces an error because ITEM_CNT cannot be displayed in the outer query.
B. The statement produces an error because a subquery in the FROM clause and outer- joins cannot be used together.
C. The statement executes successfully and produces the required output.
D. The statement produces an error because the GROUP BY clause cannot be used in a subquery in the FROM clause.

Answer: C

NEW QUESTION # 115
Examine this partial query:
SELECT ch.channel_type, t.month, co.country_code, SUM(s.amount_sold) SALES FROM sales s, times t, channels ch, countries co WHERE s.time_ id = t.time id AND s.country_ id = co. country id AND s. channel id = ch.channel id AND ch.channel type IN ('Direct Sales', 'Internet') AND t.month IN ('2000-09', '2000-10') AND co.country code IN ('GB', 'US') Examine this output:

Which GROUP BY clause must be added so the query returns the results shown?

A. GROUP BY CUBE (ch. channel_ type, t .month, co. country code);
B. GROUP BY ch.channel_type, t.month, co.country code;
C. GROUP BY ch.channel_type,ROLLUP (t month, co. country_ code) ;
D. GROUP BYch. channel_ type, t.month,ROLIUP (co. country_ code) ;

Answer: C

NEW QUESTION # 116
Examine this SQL statement:

Which two are true?

A. The subquery is executed before the UPDATE statement is executed
B. The UPDATE statement executes successfully even if the subquery selects multiple rows
C. All existing rows in the ORDERS table are updated
D. The subquery is not a correlated subquery
E. The subquery is executed for every updated row in the ORDERS table

Answer: C,E

NEW QUESTION # 117
......

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