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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q411-Q416):

NEW QUESTION # 411
See the Exhibit and examine the structure of the PROMOTIONS table:

Using the PROMOTIONS table,
you need to find out the average cost for all promos in the range $0-2000 and $2000-5000 in category A.
You issue the following SQL statements:

What would be the outcome?

A. It generates an error because NULL cannot be specified as a return value.
B. It generates an error because CASE cannot be used with group functions.
C. It generates an error because multiple conditions cannot be specified for the WHEN clause.
D. It executes successfully and gives the required result.

Answer: D

Explanation:
Explanation
CASE Expression
Facilitates conditional inquiries by doing the work of an IF-THEN-ELSE statement:
CASE expr WHEN comparison_expr1 THEN return_expr1
[WHEN comparison_expr2 THEN return_expr2
WHEN comparison_exprn THEN return_exprn
ELSE else_expr]
END

NEW QUESTION # 412
Examine this query:

Which two methods should you use to prevent prompting for a hire date value when this query is executed?

A. Use the UNDEFINEcommand before executing the query.
B. Store the query in a script and pass the substitution value to the script when executing it.
C. Use the DEFINEcommand before executing the query.
D. Replace '&1'with '&&1'in the query.
E. Execute the SET VERIFY ONcommand before executing the query.
F. Execute the SET VERIFY OFF command before executing the query.

Answer: B,E

NEW QUESTION # 413
Examine the structure of the BOOKS_TRANSACTIONS table:

Examine the SQL statement:

Which statement is true about the outcome?

A. It displays details for members who have borrowed before today's date with either RM as TRANSACTION_TYPEor MEMBER_IDas A101 and A102.
B. It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.
C. It displays details for members who have borrowed before today with RM as TRANSACTION_TYPEand the details for members A101 or A102.
D. It displays details for only members A101 and A102 who have borrowed before today with RM TRANSACTION_TYPE.

Answer: C

NEW QUESTION # 414
Examine this statement:
SELECT cust_id, cust

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