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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q206-Q211):

NEW QUESTION # 206
View the exhibit for the structure of the STUDENTand FACULTYtables.

You need to display the faculty name followed by the number of students handled by the faculty at the base location.
Examine the following two SQL statements:
Statement 1
SQL>SELECT faculty_name, COUNT(student_id)
FROM student JOIN faculty
USING (faculty_id, location_id)
GROUP BY faculty_name;
Statement 2
SQL>SELECT faculty_name, COUNT(student_id)
FROM student NATURAL JOIN faculty
GROUP BY faculty_name;
Which statement is true regarding the outcome?

A. Both statements 1 and 2 execute successfully and give the same required result.
B. Only statement 1 executes successfully and gives the required result.
C. Only statement 2 executes successfully and gives the required result.
D. Both statements 1 and 2 execute successfully and give different results.

Answer: B

NEW QUESTION # 207
In the PROMOTIONS table, the PROMO_BEGIN_DATEcolumn is of data type DATEand the default date format is DD-MON-RR.
Which two statements are true about expressions using PROMO_BEGIN_DATEcontained a query? (Choose two.)

A. PROMO_BEGIN_DATE - SYSDATEwill return an error.
B. PROMO_BEGIN_DATE - SYSDATEwill return a number.
C. TO_NUMBER(PROMO_BEGIN_DATE)- 5 will return a number.
D. TO_DATE(PROMO_BEGIN_DATE * 5)will return a date.
E. PROMO_BEGIN_DATE- 5 will return a date.

Answer: B,D

NEW QUESTION # 208
Which three statements are true about views in an Oracle database?

A. Views have no segment.
B. Rows inserted into a table using a view are retained in the table if the view is dropped
C. Views have no object number.
D. Views can join tables only if they belong to the same schema.
E. A SELECT statement cannot contain a where clause when querying a view containing a WHERE clause in its defining query
F. A view can be created that refers to a non-existent table in its defining query.

Answer: A,B,F

Explanation:
A view is a virtual table based on a SQL query.
A: This is incorrect because a SELECT statement querying a view can contain a WHERE clause, regardless of the view's defining query. C. This is incorrect because views can join tables from different schemas, not just the same schema. B. Correct. The rows inserted into a base table via a view remain in the table even if the view is dropped because the view is just a window to the data in the base tables. D. Correct. Views do not require storage space other than for the definition of the view in the data dictionary, hence they have no segment. E. Incorrect. Views do not have object numbers because they are not database objects that occupy physical space. F. Correct. You can create a view that references non-existent tables; such a view would be considered invalid until the base table is created.
The Oracle Database Concepts guide provides information about views and their characteristics.

NEW QUESTION # 209
View the Exhibit and examine the data in the PRODUCTS table.

Which statement would add a column called PRICE, which cannot contain NULL?

A. ALTER TABLE products
ADD price NUMBER(8,2) DEFAULT NOT NULL;
B. ALTER TABLE products
ADD price NUMBER(8,2) DEFAULT 0 NOT NULL;
C. ALTER TABLE products
ADD price NUMBER(8,2) NOT NULL;
D. ALTER TABLE products
ADD price NUMBER(8,2) DEFAULT CONSTRAINT p_nn NOT NULL.

Answer: B

NEW QUESTION # 210
Examine the data in the PRODUCTS table:

Examine these queries:
1. SELECT prod name, prod list
FROM products
WHERE prod 1ist NOT IN(10,20) AND category _id=1;
2. SELECT prod name, | prod _ list
FROM products
WHERE prod list < > ANY (10,20) AND category _id= 1;
SELECT prod name, prod _ list
FROM products
WHERE prod_ list <> ALL (10, 20) AND category _ id= 1;
Which queries generate the same output?

A. 1, 2 and 3
B. 1 and 2
C. 1 and 3
D. 2 and 3

Answer: C

NEW QUESTION # 211
......

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