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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Working with Time Zones and Date/Time Data		- Time zone conversion functions - TIMESTAMP, INTERVAL data types
Topic 2: Using SET Operators		- UNION, UNION ALL, INTERSECT, MINUS operators - Ordering results with set operations
Topic 3: Displaying Data from Multiple Tables	15%	- Equijoins and non-equijoins - Self-joins and outer joins - Cartesian products
Topic 4: Aggregating Data Using Group Functions	10%	- SUM, AVG, COUNT, MAX, MIN functions - Handling NULLs in group functions - GROUP BY and HAVING clauses
Topic 5: Managing Indexes, Synonyms and Sequences		- Create and use sequences - Create and maintain indexes - Create and use synonyms
Topic 6: Managing Views		- Updatable and read-only views - Create, modify and drop views
Topic 7: Restricting and Sorting Data	15%	- ORDER BY clause and sorting rules - Operator precedence - WHERE clause and filtering conditions - Substitution variables, DEFINE and VERIFY commands
Topic 8: Using Single-Row Functions to Customize Output	20%	- Character, number, and date functions - Nested functions usage
Topic 9: Using Subqueries to Solve Queries		- Single-row and multi-row subqueries - Correlated subqueries for update/delete
Topic 10: Conversion Functions and Conditional Expressions	10%	- Implicit and explicit data type conversion - TO_CHAR, TO_NUMBER, TO_DATE functions - NVL, NULLIF, COALESCE and CASE expressions
Topic 11: Manipulating Data and Managing Transactions		- INSERT, UPDATE, DELETE, MERGE statements - Multi-table inserts - Transaction control: COMMIT, ROLLBACK, SAVEPOINT
Topic 12: Using Data Dictionary Views		- Retrieve metadata and object information
Topic 13: Managing Tables and Constraints		- Constraints: primary key, foreign key, unique, check, not null - Temporary and external tables - Data types, creating/altering/dropping tables
Topic 14: Retrieving Data Using SQL SELECT Statement	20%	- SELECT statement syntax and usage - Column aliases, concatenation, literals and DISTINCT - Arithmetic operations and NULL handling
Topic 15: Controlling User Access		- Roles, granting and revoking privileges - System and object privileges
Topic 16: Relational Database Concepts	10%	- ERD and SQL statement mapping - Theoretical and physical aspects of relational databases - Relationship between database and SQL

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Oracle Database SQL Sample Questions (Q167-Q172):

NEW QUESTION # 167
Examine the description of EMPLOYEES table:
Which three queries return all rows for which SALARY+COMMISSION is greate than 20000?

A. SELECT * FROM employees WHERE salary+NVL(commission,0)>=20000;
B. SELECT * FROM employees WHERE NVL2(salary)+commission,salary+commission,
C. SELECT * FROM employees WHERE NVL(salary+commission,0)>=20000;
D. SELECT * FROM employees WHERE NVL(salary+commission,0)>==20000;
E. SELECT * FROM employees WHERE salary+NVL2(commission,commission,0)>=20000;
F. SELECT * FROM employees WHERE salary+NULLF(commission,0)>=20000;

Answer: A,B,E

NEW QUESTION # 168
Examine the structure proposed for the TRANSACTIONS table:

Which two statements are true regarding the storage of data in the above table structure? (Choose two.)

A. The CUST_STATUS column would allow storage of data up to the maximum VARCHAR2 size of
4,000 characters.
B. The TRANS_DATE column would allow storage of dates only in the dd-mon-yyyy format.
C. The CUST_CREDIT_VALUE column would allow storage of positive and negative integers.
D. The TRANS_VALIDITY column would allow storage of a time interval in days, hours, minutes, and seconds.

Answer: C,D

NEW QUESTION # 169
You execute this query:

What is the result?

A. It returns the date for the first Monday of the next month.
B. It returns the date for the last Monday of the current month.
C. It generates an error.
D. It executes successfully but does not return any result.

Answer: A

NEW QUESTION # 170
Examine the description of the EMPLOYEES table:

Which query is valid?

A. SELECT dept_id, MAX (AVG(salary)) FROM employees GROUP BY dept_id;
B. SELECT dept_id, join_date, SUM(salary) FROM employees GROUP BY dept_id;
C. SELECT dept_id, AVG(NAX(salary)) FROM employees GROUP BY dept_id;
D. SELECT dept_id, join date, SUM(salary) FROM employees GROUP BY dept_id,join_date;

Answer: D

NEW QUESTION # 171
View the exhibit and examine the structure of ORDERSand CUSTOMERStables.

Which INSERT statement should be used to add a row into the ORDERStable for the customer whose CUST_LAST_NAMEis Robertsand CREDIT_LIMITis 600? Assume there exists only one row with CUST_LAST_NAME as Roberts and CREDIT_LIMIT as 600.

A. INSERT INTO orders (order_id, order_date, order_mode,
( SELECT customer id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total);
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);
B. INSERT INTO (SELECT o.order_id, o.order_date, o.order_mode, c.customer_id, o.order_total FROM orders o, customers c
WHERE o.customer_id = c.customer_id AND c.cust_last_name='Roberts' AND
c.credit_limit=600)
VALUES (1,'10-mar-2007', 'direct', (SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);
C. INSERT INTO orders (order_id, order_date, order_mode,
( SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), order_total);
VALUES (1,'10-mar-2007', 'direct', &customer_id, 1000);
D. INSERT INTO orders
VALUES (1,'10-mar-2007', 'direct',
( SELECT customer_id
FROM customers
WHERE cust_last_name='Roberts' AND credit_limit=600), 1000);

Answer: D

NEW QUESTION # 172
......

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