Quiz 2026 1z0-071: Oracle Database SQL–Professional Valid Exam Practice

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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Displaying Data from Multiple Tables	15%	- Self-joins and outer joins - Cartesian products - Equijoins and non-equijoins
Using Data Dictionary Views		- Retrieve metadata and object information
Using Single-Row Functions to Customize Output	20%	- Character, number, and date functions - Nested functions usage
Working with Time Zones and Date/Time Data		- TIMESTAMP, INTERVAL data types - Time zone conversion functions
Using SET Operators		- UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations
Aggregating Data Using Group Functions	10%	- Handling NULLs in group functions - GROUP BY and HAVING clauses - SUM, AVG, COUNT, MAX, MIN functions
Conversion Functions and Conditional Expressions	10%	- TO_CHAR, TO_NUMBER, TO_DATE functions - NVL, NULLIF, COALESCE and CASE expressions - Implicit and explicit data type conversion
Managing Indexes, Synonyms and Sequences		- Create and use synonyms - Create and maintain indexes - Create and use sequences
Retrieving Data Using SQL SELECT Statement	20%	- Arithmetic operations and NULL handling - SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT
Restricting and Sorting Data	15%	- Substitution variables, DEFINE and VERIFY commands - Operator precedence - ORDER BY clause and sorting rules - WHERE clause and filtering conditions
Managing Tables and Constraints		- Constraints: primary key, foreign key, unique, check, not null - Data types, creating/altering/dropping tables - Temporary and external tables
Relational Database Concepts	10%	- Theoretical and physical aspects of relational databases - Relationship between database and SQL - ERD and SQL statement mapping
Using Subqueries to Solve Queries		- Correlated subqueries for update/delete - Single-row and multi-row subqueries
Managing Views		- Updatable and read-only views - Create, modify and drop views
Manipulating Data and Managing Transactions		- Transaction control: COMMIT, ROLLBACK, SAVEPOINT - INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts
Controlling User Access		- Roles, granting and revoking privileges - System and object privileges

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Oracle Database SQL Sample Questions (Q348-Q353):

NEW QUESTION # 348
View the exhibit and examine the structure of the STOREStable.

You want to display the NAME of the store along with the ADDRESS, START_DATE, PROPERTY_PRICE, and the projected property price, which is 115% of property price.
The stores displayed must have START_DATEin the range of 36 months starting from 01-Jan-2000 and above.
Which SQL statement would get the desired output?

A. SELECT name, concat (address| | ','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100
FROM stores
WHERE TO_NUMBER(start_date-TO_DATE('01-JAN-2000','DD-MON-RRRR')) <=36;
B. SELECT name, address||','||city||','||country AS full_address,
start_date,
property_price, property_price*115/100
FROM stores
WHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR'))
<=36;
C. SELECT name, concat (address| | ','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100
FROM stores
WHERE MONTHS_BETWEEN (start_date, '01-JAN-2000') <=36;
D. SELECT name, concat (address||','| |city| |', ', country) AS full_address, start_date, property_price, property_price*115/100
FROM stores
WHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR'))
<=36;

Answer: D

NEW QUESTION # 349
View the exhibit and examine the structure of the SALES, CUSTOMERS, PRODUCTS and TIMES tables.

The PROD_ID column is the foreign key in the SALES table referencing the PRODUCTS table.
The CUST_ID and TIME_ID columns are also foreign keys in the SALES table referencing the CUSTOMERS and TIMES tables, respectively.
Examine this command:
CREATE TABLE new_sales (prod_id, cust_id, order_date DEFAULT SYSDATE)
AS
SELECT prod_id, cust_id, time_id
FROM sales;
Which statement is true?

A. The NEW_SALES table would not get created because the DEFAULT value cannot be specified in the column definition.
B. The NEW_SALES table would not get created because the column names in the CREATE TABLE command and the SELECT clause do not match.
C. The NEW_SALES table would get created and all the FOREIGN KEY constraints defined on the selected columns from the SALES table would be created on the corresponding columns in the NEW_SALES table.
D. The NEW_SALES table would get created and all the NOT NULL constraints defined on the selected columns from the SALES table would be created on the corresponding columns in the NEW_SALES table.

Answer: D

NEW QUESTION # 350
Which three are true about multitable INSERTstatements? (Choose three.)

A. They can be performed on views.
B. They can be performed on relational tables.
C. They can be performed only by using a subquery.
D. They can be performed on external tables using SQL* Loader.
E. They can insert each computed row into more than one table.
F. They can be performed on remote tables.

Answer: A,B,E

NEW QUESTION # 351
Examine the description of the EMPLOYEES table:

NLS_DATE_FORMAT is set to DD-MON-YY.
Which query requires explicit data type conversion?

A. SELECT SUBSTR(join date, 1, 2)- 10 FROM employees;
B. SELECT join date 11.'11 salary FROM employees;
C. SELECT join date + 20 FROM employees;
D. SELECT join date FROM employees where join date > *10-02-2018*;
E. SELECT salary + 120.50 FROM employees;

Answer: D

NEW QUESTION # 352
Evaluate the following two queries:
SQL> SELECT cust_last_name, cust_city
FROM customers
WHERE cust_credit_limit IN (1000, 2000, 3000);
SQL> SELECT cust_last_name, cust_city
FROM customers
WHERE cust_credit_limit = 1000 or cust_credit_limit = 2000 or
cust_credit_limit = 3000
Which statement is true regarding the above two queries?

A. Performance would improve in query 2.
B. Performance would degrade in query 2.
C. There would be no change in performance.
D. Performance would improve in query 2 only if there are null values in the CUST_CREDIT_LIMIT column.

Answer: C

Explanation:
Explanation
References:
http://oraclexpert.com/restricting-and-sorting-data/

NEW QUESTION # 353
......

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