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

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Oracle Database SQL Sample Questions (Q381-Q386):

NEW QUESTION # 381
View the Exhibit and examine the structure of ORDERS and CUSTOMERS tables. (Choose the best answer.)

You executed this UPDATE statement:

Which statement is true regarding the execution?

A. It would not execute because two tables cannot be referenced in a single UPDATE statement.
B. It would not execute because a SELECT statement cannot be used in place of a table name.
C. It would execute and restrict modifications to the columns specified in the SELECT statement.
D. It would not execute because a subquery cannot be used in the WHERE clause of an UPDATE statement.

Answer: C

NEW QUESTION # 382
Examine the data in the INVOICES table:

Examine the data in the CURRENCIES table:
CURRENCY_CODE
-------------
JPY
GPB
CAD
EUR
USD
Which query returns the currencies in CURRENCIES that are not present in INVOICES?

A. SELECT currency_ code FROM currencies
INTERSECT
SELECT currency_ code FROM invoices;
B. SELECT * FROM currencies
WHERE NOT EXISTS (
SELECT NULL FROM invoices WHERE currency_ code = currency_ code);
C. SELECT currency_ code FROM currencies
MINUS
SELECT currency_ code FROM invoices;
D. SELECT * FROM currencies
MINUS
SELECT * FROM invoices;

Answer: C

NEW QUESTION # 383
Examine the structure of the DEPARTMENTS table.

You execute the following command:

Which two statements are true?

A. A new column, COUNTRY, can be added to the DEPARTMENTS table after executing the command.
B. Unique key constraints defined on the COUNTRY column are removed.
C. Synonyms existing of the DEPARTMENTS table would have to be re-created.
D. Views created in the DEPARTMENTS table that include the COUNTRY column are automatically modified and remain valid.
E. Indexes created on the COUNTRY column exist until the DROP UNUSED COLUMNS command is executed.

Answer: A,B

NEW QUESTION # 384
Examine the BRICKS table:

You write this query:
SELECT
FROM bricks b1 CROSS JOIN bricks b2
WHERE b1. Weight < b2. Weight:
How many rows will the query return?

A. 0
B. 1
C. 2
D. 3
E. 4
F. 5

Answer: A

NEW QUESTION # 385

For each employee in department 90 you want to display:
1. their last name
2. the number of complete weeks they have been employed
The output must be sorted by the number of weeks, starting with the longest serving employee first.Which statement will accomplish this?

A. SELECT last_name, ROUND( (SYSDATE - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure ;
B. SELECT last_name, TRUNC ( (SYSDATE - - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_id = 90
ORDER BY tenure DESC;
C. SELECT last_name, TRUNC( (SYSDATE - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure ;
D. SELECT last_name, ROUND( (SYSDATE - hire_ date) 17) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure DESC;

Answer: B

NEW QUESTION # 386
......

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