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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q180-Q185):

NEW QUESTION # 180
Which two are true about the data dictionary?

A. The data dictionary is constantly updated to reflect changes to database objects, permissions, and data.
B. All user actions are recorded in the data dictionary.
C. All users have permissions to access all information in the data dictionary by default
D. Base tables in the data dictionary have the prefix DBA_.
E. The SYS user owns all base tables and user-accessible views in the data dictionary.

Answer: A,E

Explanation:
C . True, the data dictionary is constantly updated to reflect changes to the metadata of the database objects, permissions, and structures, among other things.
E . True, the SYS user owns all base tables in the data dictionary. These base tables underlie all data dictionary views that are accessible by the users.
A, B, and D are not correct because: A. Base tables do not necessarily have the prefix DBA_; instead, DBA_ is a prefix for administrative views that are accessible to users with DBA privileges. B. The data dictionary records metadata about the actions, not the actions themselves. D. Not all users have access to all information in the data dictionary. Access is controlled by privileges.
Reference:
Oracle documentation on data dictionary and dynamic performance views: Oracle Database Reference Understanding the Oracle data dictionary: Oracle Database Concepts

NEW QUESTION # 181
View the Exhibit and examine the structure of the ORDERS table.

Which UPDATE statement is valid?

A. UPDATE ordersSET order_date = '12-mar-2007',order_total IS NULLWHERE order_id = 2455;
B. UPDATE ordersSET order_date = '12-mar-2007',AND order_total = TO_NUMBER(NULL)WHERE order_id = 2455;
C. UPDATE ordersSET order_date = '12-mar-2007',order_total = NULLWHERE order_id = 2455;
D. UPDATE ordersSET order_date = TO_DATE('12-mar-2007','dd-mon-yyyy'),SET order_total = TO_NUMBER (NULL)WHERE order_id = 2455;

Answer: C

NEW QUESTION # 182
View the Exhibit and examine the structure of the ORDERStable.

Which UPDATE statement is valid?
UPDATE orders

A. SET order_date = ’12-mar-2007’,
AND order_total = TO_NUMBER(NULL)
WHERE order_id = 2455;
UPDATE orders
B. SET order_date = ’12-mar-2007’,
order_total IS NULL
WHERE order_id = 2455;
UPDATE orders
C. SET order_date = TO_DATE(’12-mar-2007’,’dd-mon-yyyy’),
SET order_total = TO_NUMBER (NULL)
WHERE order_id = 2455;
D. SET order_date = ’12-mar-2007’,
order_total = NULL
WHERE order_id = 2455;
UPDATE orders

Answer: D

NEW QUESTION # 183
MANAGER is an existing role with no privileges or roles.
EMP is an existing role containing the CREATE TABLE privilege.
EMPLOYEES is an existing table in the HR schema.
Which two commands execute successfully?

A. GRANT CREATE ANY SESSION, CREATE ANY TABLE TO manager;
B. GRANT CREATE SEQUENCE TO manager, emp;
C. GRANT CREATE TABLE, SELECT ON hr. employees TO manager;
D. GRANT CREATE TABLE, emp TO manager;
E. GRANT SELECT, INSERT ON hr.employees TO manager WITH GRANT OPTION:

Answer: B,D

NEW QUESTION # 184
Examine the description of the CUSTOMERS table:

Which two SELECT statements will return these results:
CUSTOMER_ NAME
--------------------
Mandy
Mary

A. SELECT customer_ name FROM customers WHERE customer_ name='*Ma*';
B. SELECT customer_ name FROM customers WHERE UPPER (customer name) LIKE 'MA&';
C. SELECT customer_ name FROM customers WHERE customer_ name LIKE ' % a % ' ;
D. SELECT customer_ name FROM customers WHERE UPPER (customer_ name ) LIKE 'MA*. ;
E. SELECT customer_ name FROM customers WHERE customer_ name KIKE .*Ma*';
F. SELECT customer_ name FROM customers WHERE customer name LIKE 'Ma*';
G. SELECT customer_ name FROM customers WHERE customer name LIKE 'Ma%' ;

Answer: C,G

NEW QUESTION # 185
......

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