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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q373-Q378):

NEW QUESTION # 373
In which three situations does a new transaction always start? (Choose three.)

A. when issuing a CREATE INDEX statement after a CREATE TABLE statement completed successfully in the same session
B. when issuing a TRUNCATE statement after a SELECT statement was issued in the same session
C. when issuing a SELECT FOR UPDATE statement after a CREATE TABLE AS SELECT statement was issued in the same session
D. when issuing the first Data Manipulation Language (DML) statement after a COMMIT or ROLLBACK statement was issued in the same session
E. when issuing a DML statement after a DML statement failed in the same session
F. when issuing a CREATE TABLE statement after a SELECT statement was issued in the same session

Answer: C,D,E

Explanation:
https://docs.oracle.com/cd/B19306_01/server.102/b14220/transact.htm

NEW QUESTION # 374
Which two are true about the precedence of opertors and condtions

A. NOT has a higher order of precedence than AND and OR in a condition.
B. Operators are evaluated before conditions.
C. + (addition) has a higher order of precedence than * (mliplpition)
D. AND and OR have the same order of precedence in a condition
E. || has a higher order of precedence than +(addition)

Answer: A,B

NEW QUESTION # 375
Which two statements are true about CURRENT_TIMEITAMP?

A. The date is in the time zone of DBTIMEZONE.
B. It always returns the same value as SYSTIMESTAMP
C. It returns the same date as CURRENT_DATE.
D. It returns a value of data type TIMESTAMP
E. The time is in the time zone of DBTIMEZONE.
F. The value varies depending on the setting of SESSIONTIMEZONE.

Answer: D,F

Explanation:
B). True. CURRENT_TIMESTAMP returns the current date and time in the session time zone, which is determined by the SESSIONTIMEZONE setting.
E). True. CURRENT_TIMESTAMP returns a value of the data type TIMESTAMP WITH TIME ZONE.
A and D are incorrect because CURRENT_TIMESTAMP reflects the session time zone, not DBTIMEZONE. C is incorrect because CURRENT_DATE returns the current date with no time component, whereas CURRENT_TIMESTAMP includes both date and time. F is incorrect because SYSTIMESTAMP returns the current date and time from the system clock in the time zone of the database server, which can differ from the session's time zone affecting CURRENT_TIMESTAMP.

NEW QUESTION # 376
View the Exhibit and examine the structure of the PRODUCT_INFORMATIONand INVENTORIEStables.

You have a requirement from the supplies department to give a list containing PRODUCT_ID, SUPPLIER_ID,and QUANTITY_ON_HANDfor all the products wherein QUANTITY_ON_HANDis less than five.
Which two SQL statements can accomplish the task? (Choose two.)

A. SELECT i.product_id, i.quantity_on_hand, pi.supplier_id
FROM product_information pi JOIN inventories i
USING (product_id) AND quantity_on_hand < 5;
B. SELECT i.product_id, i.quantity_on_hand, pi.supplier_id
FROM product_information pi JOIN inventories i
ON (pi.product_id=i.product_id)
WHERE quantity_on_hand < 5;
C. SELECT i.product_id, i.quantity_on_hand, pi.supplier_id
FROM product_information pi JOIN inventories i
ON (pi.product_id=i.product_id) AND quantity_on_hand < 5;
D. SELECT product_id, quantity_on_hand, supplier_id
FROM product_information
NATURAL JOIN inventories AND quantity_on_hand < 5;

Answer: B,C

NEW QUESTION # 377
View the exhibit and examine the structure of the CUSTOMERStable.

Which two tasks would require subqueries or joins to be executed in a single statement?

A. finding the number of customers, in each city, whose credit limit is more than the average credit limit of all the customers
B. finding the number of customers, in each city, whose marital status is 'married'.
C. listing of customers who do not have a credit limit and were born before 1980
D. finding the average credit limit of male customers residing in 'Tokyo'or 'Sydney'
E. listing of those customers, whose credit limit is the same as the credit limit of customers residing in the city 'Tokyo'.

Answer: A,E

NEW QUESTION # 378
......

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