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Oracle 1z1-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q329-Q334):

NEW QUESTION # 329
Evaluate the following SQL statement:

Which statement is true regarding the outcome of the above query?

A. It produces an error because the ORDER BY clause should appear only at the end of a compound query-that is, with the last SELECT statement.
B. It executes successfully and displays rows in the descending order of PROMO_CATEGORY.
C. It produces an error because positional notation cannot be used in the ORDER BY clause with SET operators.
D. It executes successfully but ignores the ORDER BY clause because it is not located at the end of the compound statement.

Answer: A

NEW QUESTION # 330
In the PROMOTIONS table, the PROMO_ BEGIN_DATE column is of data type and the default date format is DD-MON-RR Which two statements are true about expressions using PROMO_ BEGIN_DATE in a query?

A. TODATE(PROMO BEGIN_DATE *5) will return a date
B. TONUMBER (PROMO BEGIN_DATE) - 5 will return a number
C. PROMO_ BEGIN_DATE - 5 will return a date
D. PROMO_ BEGIN_DATE - SYSDATE will return a number
E. PROMO_ BEGIN_DATE - SYSDATE will return an error

Answer: C,D

NEW QUESTION # 331
Which two statements are true about a full outer join?

A. The Oracle join operator (+) must be used on both sides of the join condition in the WHERE clause.
B. It includes rows that are returned by an inner join.
C. It returns matched and unmatched rows from both tables being joined.
D. It includes rows that are returned by a Cartesian product.
E. It returns only unmatched rows from both tables being joined.

Answer: B,C

Explanation:
In Oracle Database 12c, regarding a full outer join:
* A. It includes rows that are returned by an inner join. This is true. A full outer join includes all rows from both joined tables, matching wherever possible. When there's a match in both tables (as with an inner join), these rows are included.
* D. It returns matched and unmatched rows from both tables being joined. This is correct and the essence of a full outer join. It combines the results of both left and right outer joins, showing all rows from both tables with matching rows from the opposite table where available.
Options B, C, and E are incorrect:
* B is incorrect because the Oracle join operator (+) is used for syntax in older versions and cannot implement a full outer join by using (+) on both sides. Proper syntax uses the FULL OUTER JOIN keyword.
* C is incorrect as a Cartesian product is the result of a cross join, not a full outer join.
* E is incorrect because it only describes the scenario of a full anti-join, not a full outer join.

NEW QUESTION # 332
Examine the structure of the BOOKS_TRANSACTIONS table:
NameNull?Type
------------------------------------------------------------
TRANSACTION_IDNOT NULLVARCHAR2 (6)
BORROWED_DATEVARCHAR2 (50)
DUE_DATEDATE
BOOK_IDDATE
MEMBER_IDVARCHAR2 (6)
You want to display the member IDs, due date, and late fee as $2 for all transactions.
Which SQL statement must you execute?

A. SELECT member_id 'MEMBER ID', due_date 'DUE DATE', '$2 AS LATE FEE' FROM BOOKS_TRANSACTIONS;
B. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", '$2' AS "LATE FEE" FROM BOOKS_TRANSACTIONS;
C. SELECT member_id AS "MEMBER ID", due_date AS "DUE DATE", $2 AS "LATE FEE" FROM BOOKS_TRANSACTIONS;
D. SELECT member_id AS MEMBER_ID, due_date AS DUE_DATE, $2 AS LATE_FEE
FROM BOOKS_TRANSACTIONS;

Answer: B

NEW QUESTION # 333
View the exhibit and examine the structure of the STORES table.
STORES table
NameNull?Type
---------------------- -------------
STORE_IDNUMBER
NAMEVARCHAR2(100)
ADDRESSVARCHAR2(200)
CITYVARCHAR2(100)
COUNTRYVARCHAR2(100)
START_DATEDATE
END_DATEDATE
PROPERTY_PRICENUMBER
You want to display the NAME of the store along with the ADDRESS, START_DATE, PROPERTY_PRICE, and the projected property price, which is 115% of property price.
The stores displayed must have START_DATE in the range of 36 months starting from 01- Jan-2000 and above.
Which SQL statement would get the desired output?

A. SELECT name, address||','||city||','||country AS full_address,start_date,property_price, property_price*115/100FROM storesWHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR')) <=36;
B. SELECT name, concat (address| | ','| |city| |', ', country) AS
full_address,start_date,property_price, property_price*115/100FROM storesWHERE TO_NUMBER(start_date-TO_DATE('01-JAN-2000','DD-MON-RRRR')) <=36;
C. SELECT name, concat (address||','| |city| |', ', country) AS
full_address,start_date,property_price, property_price*115/100FROM storesWHERE MONTHS_BETWEEN (start_date, TO_DATE('01-JAN-2000','DD-MON-RRRR')) <=36;
D. SELECT name, concat (address| | ','| |city| |', ', country) AS
full_address,start_date,property_price, property_price*115/100FROM storesWHERE MONTHS_BETWEEN (start_date, '01-JAN-2000') <=36;

Answer: C

NEW QUESTION # 334
......

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