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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q329-Q334):

NEW QUESTION # 329
View the Exhibit and examine the structure of the PRODUCT_INFORMATION table. (Choose the best answer.)

PRODUCT_ID column is the primary key.
You create an index using this command:
SQL > CREATE INDEX upper_name_idx
ON product_information(UPPER(product_name));
No other indexes exist on the PRODUCT_INFORMATION table.
Which query would use the UPPER_NAME_IDX index?

A. SELECT UPPER(product_name)
FROM product_information
WHERE product_id = 2254;
B. SELECT product_id, UPPER(product_name)
FROM product_information
WHERE UPPER(product_name) = 'LASERPRO' OR list_price > 1000;
C. SELECT product_id
FROM product_information
WHERE UPPER(product_name) IN ('LASERPRO', 'CABLE');
D. SELECT UPPER(product_name)
FROM product_information;

Answer: C

NEW QUESTION # 330
Refer to the exhibit.

Which two queries will result in an error?

A. SELECT LAST_NAME,12 * SALARY AS ANNUAL_SALARY
FROM EMPLOYEES
WHERE 12 * SALARY > 100000
ORDER BY ANNUAL_SALARY;
B. SELECT FIRST_NAME,LAST_NAME FROM EMPLOYEES;
C. SELECT FIRST_NAME LAST_NAME FROM EMPLOYEES;
D. SELECT LAST_NAME,12 * SALARY AS ANNUAL_SALARY
FROM EMPLOYEES
WHERE 12 * SALARY > 100000
ORDER BY 12 * SALARY;
E. SELECT LAST_NAME,12 * SALARY AS ANNUAL_SALARY
FROM EMPLOYEES
WHERE ANNUAL_SALARY > 100000
ORDER BY ANNUAL_SALARY;
F. SELECT LAST_NAME,12 * SALARY AS ANNUAL_SALARY
FROM EMPLOYEES
WHERE ANNUAL_SALARY > 100000
ORDER BY 12 * SALARY ;

Answer: C,F

Explanation:
In Oracle SQL, the following syntactical rules apply:
A . This query will result in an error because there is no comma separating the column names FIRST_NAME and LAST_NAME. The correct syntax should include a comma to separate the column names in the SELECT list.
B . This query is correctly formatted with a comma separating the column names, so it will not result in an error.
C . This query will result in an error because an alias defined in the SELECT list (ANNUAL_SALARY) cannot be used in the WHERE clause of the same query level. It must be repeated in the WHERE clause as 12 * SALARY.
D . This query will execute successfully because 12 * SALARY is directly used in the WHERE clause, and ANNUAL_SALARY is used in the ORDER BY clause, which is allowed.
E . This query is correct and will not result in an error. It uses 12 * SALARY in both the WHERE and ORDER BY clauses.
F . Similar to option C, this query will execute successfully because ANNUAL_SALARY is correctly used in the ORDER BY clause, and the WHERE clause does not attempt to reference the alias.
Reference:
Oracle Database SQL Language Reference, 12c Release 1 (12.1): "Database Object Names and Qualifiers"

NEW QUESTION # 331
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 with RM as TRANSACTION_TYPEand the details for members A101 or A102.
B. It displays details for members who have borrowed before today's date with either RM as TRANSACTION_TYPEor MEMBER_IDas A101 and A102.
C. It displays details only for members who have borrowed before today with RM as TRANSACTION_TYPE.
D. It displays details for only members A101 and A102 who have borrowed before today with RM TRANSACTION_TYPE.

Answer: A

NEW QUESTION # 332
View the Exhibit and examine PRODUCTS and ORDER_ITEMS tables.
You executed the following query to display PRODUCT_NAME and the number of times the product has been ordered:
SQL>SELECT p.product_name, i.item_cnt
FROM (SELECT product_id, COUNT (*) item_cnt
FROM order_items
GROUP BY product_id) i RIGHT OUTER JOIN products p
ON i.product_id = p.product_id;
What would happen when the above statement is executed?

A. The statement would not execute because the ITEM_CNT alias cannot be displayed in the outer query.
B. The statement would not execute because the GROUP BY clause cannot be used in the inline.
C. The statement would execute successfully to produce the required output.
D. The statement would not execute because inline views and outer joins cannot be used together.

Answer: C

NEW QUESTION # 333
Examine the description of the ORDERS table:
Which three statements execute successfully?

A. SELECT * FROM ORDERS ORDER BY ORDER_ID
UNION
SELECT * FROM INVOICES;
B. (SELECT * FROM ORDERS
C. SELECT ORDER_ID ORDER_DATE FROM ORDERS
UION ALL
SELECT INVOICE_ID, INVOICE_DATE FROM INVOICE ORDER BY ORDER_ID;
D. SELECT * FROM ORDERS ORDER BY ORDER_ID
INTERSECT
SELECT * FROM INVOICE ORDER BY INVOICE_ID;
E. SELECT ORDER_ID INVOICE_ID ORDER-DATE FROM ORDERS
MINUS
SELECT INVOICE_ID INVOICE_DATA FROM INVOICE ORDER BY INVOICE_ID;

Answer: C,E

NEW QUESTION # 334
......

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