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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q147-Q152):

NEW QUESTION # 147
Examine the description of the ORDER_ITEMS table:

Examine this incomplete query:
SELECT DISTINCT quantity * unit_price total_paid FROM order_items ORDER BY <clause>; Which two can replace <clause> so the query completes successfully?

A. product_id
B. total_paid
C. quantity * unit_price
D. quantity
E. quantity, unit_price

Answer: B,C

NEW QUESTION # 148
Which two statements are true about Data Manipulation Language (DML) statements? (Choose two.)

A. An INSERT INTO... VALUES..... statement can add a single row based on multiple conditions on a table.
B. An INSERT INTO...VALUES.. statement can add multiple rows per execution to a table.
C. An UPDATE... SET... statement can modify multiple rows based on multiple conditions on a table.
D. A DELETE FROM..... statement can remove multiple rows based on multiple conditions on a table.
E. A DELETE FROM..... statement can remove rows based on only a single condition on a table.
F. An UPDATE....SET.... statement can modify multiple rows based on only a single condition on a table.

Answer: C,D

Explanation:
http://www.techonthenet.com/sql/and_or.php

NEW QUESTION # 149
Examine the data in the CUST_NAME column of the CUSTOMERS table.
CUST_NAME
-------------------
Renske Ladwig
Jason Mallin
Samuel McCain
Allan MCEwen
Irene Mikkilineni
Julia Nayer
You need to display customers' second names where the second name starts with "Mc" or "MC".
Which query gives the required output?

A. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1))='Mc';
B. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1)) = INITCAP('MC%');
C. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE SUBSTR(cust_name, INSTR(cust_name,' ')+1) LIKE INITCAP('MC%');
D. SELECT SUBSTR(cust_name, INSTR(cust_name,' ')+1)FROM customersWHERE INITCAP(SUBSTR(cust_name, INSTR(cust_name,' ')+1)) LIKE 'Mc%';

Answer: D

NEW QUESTION # 150
Examine these statements:

Which two are true? (Choose two.)

A. Both foreign key constraint definitions must be removed from the CREATE TABLE statements, and be added with ALTER TABLE statements once both tables are created, for the two CREATE TABLE statements to execute successfully in the order shown.
B. The CREATE TABLE EMP statement must precede the CREATE TABLE DEPT statement for all three statements to execute successfully.
C. All three statements execute successfully in the order shown.
D. The DEPT_FKEY constraint definition must be removed from the CREATE TABLE DEPT statement, and be added with an ALTER TABLE statement once both tables are created, for the two CREATE statements to execute successfully in the order shown.
TABLE
E. The DEPTNO column in the EMP table will be able to contain NULL values.
F. The MGR column in the DEPT table will not be able to contain NULL values.

Answer: A,E

NEW QUESTION # 151
Examine this data in the EMPLOYERS table

Which statement will execute successfully?

A. SELECT dept_id, LENGTH (last_name), SUM (salary) FROM employees GROUP BY dept_id
B. SELECT dept_id, MAX (Last_name), SUM (salary) FROM employees GROUP BY dept_id
C. SELECT dept_id, STDDEV (last_name), SUM (salary) FROM employees GROUP BY dept_id
D. SELECT dept_id, INSTR (last_name,'A'), SUM (salary) FROM employees GROUP BY dept_id

Answer: B

NEW QUESTION # 152
......

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