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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q217-Q222):

NEW QUESTION # 217
Which three statements are true about performing Data Manipulation Language (DML) operations on a view in an Oracle Database? (Choose three.)

A. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains aggregating functions.
B. Views cannot be used to add or modify rows in an underlying table if the defining query of the view contains the DISTINCTkeyword.
C. Insert statements can always be done on a table through a view.
D. Views cannot be used to query rows from an underlying table if the table has a PRIMARY KEYand the PRIMARY KEYcolumns are not referenced in the defining query of the view.
E. Views cannot be used to add rows to an underlying table if the table has columns with NOT NULL constraints lacking default values which are not referenced in the defining query of the view.
F. The WITH CHECKclause has no effect when deleting rows from the underlying table through the view.

Answer: A,B,E

NEW QUESTION # 218
Examine the structure of the MARKStable:

Which two statements would execute successfully? (Choose two.)
SELECT SUM(DISTINCT NVL(subject1,0)), MAX(subject1)

A. FROM marks
WHERE student_name LIKE 'R%';
B. FROM marks
WHERE student_name IS NULL;
SELECT student_name,SUM(subject1)
C. FROM marks
WHERE subject1 > subject2;
SELECT student_name subject1
D. FROM marks
WHERE subject1 > AVG(subject1);
SELECT SUM(subject1+subject2+subject3)

Answer: B,C

NEW QUESTION # 219
In which three situations does a transaction complete?

A. When a DELETE statement is executed
B. When a ROLLBACK command is executed
C. When a TRUNCATE statement is executed after the pending transaction
D. When a data definition language (DDL) statement is executed
E. When a PL/SQL anonymous block is executed

Answer: B,C,D

NEW QUESTION # 220
Which three statements are true regarding subqueries? (Choose three.)

A. Subqueries can contain GROUP BY and ORDER BY clauses.
B. Only one column or expression can be compared between the main query and subquery.
C. Main query and subquery must get data from the same tables.
D. Subqueries can contain ORDER BY but not the GROUP BY clause.
E. Main query and subquery can get data from different tables.
F. Multiple columns or expressions can be compared between the main query and subquery.

Answer: A,E,F

Explanation:
References:
http://docs.oracle.com/javadb/10.6.2.1/ref/rrefsqlj13658.html

NEW QUESTION # 221
Which two actions can you perform with object privileges?

A. Delete rows from tables in any schema except sys.
B. Set default and temporary tablespaces for a user.
C. Create FOREIGN KEY constraints that reference tables in other schemas.
D. Create roles.
E. Execute a procedure or function in another schema.

Answer: A,C

NEW QUESTION # 222
......

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