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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Using Conversion Functions and Conditional Expressions	10%	- Apply the NVL, NULLIF, and COALESCE functions to data - Use conditional IF THEN ELSE logic in a SELECT statement - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Describe implicit and explicit data type conversion
Retrieving Data Using the SQL SELECT Statement	5%	- List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands - Execute a basic SELECT statement
Working with Oracle Database SQL	8%	- Create a container database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software - Start up and shut down a database
Reporting Aggregated Data Using Group Functions	15%	- Include or exclude grouped rows by using the HAVING clause - Group data by using the GROUP BY clause - Describe the use of group functions - Identify the available group functions
Restricting and Sorting Data	6%	- Limit the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime - Sort the rows that are retrieved by a query
Using DDL Statements to Create and Manage Tables	14%	- Drop, rename, and truncate tables - Review the table structure - Alter table definitions - Create a simple table - Categorize the main database objects - Describe the data types that are available for columns
Controlling User Access	5%	- Grant privileges on tables and on a view - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles
Using Subqueries to Solve Queries	15%	- Define subqueries - List the types of subqueries - Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries
Creating Other Schema Objects	10%	- Create, modify, and retrieve data from a view - Create, maintain, and use sequences - Create synonyms for database objects - Create and maintain indexes
Manipulating Data	14%	- Control transactions - Update rows in a table - Insert rows into a table - Delete rows from a table - Describe each data manipulation language (DML) statement
Using Set Operators	5%	- Use a set operator to combine multiple queries into a single query - Describe the order of precedence when the set operators are used - Describe set operators
Displaying Data from Multiple Tables Using Joins	15%	- Cross join tables - Join a table to itself by using a self-join - View data that does not meet a join condition by using outer joins - Write SELECT statements to access data from more than one table using equijoins and non-equijoins
Using Single-Row Functions to Customize Output	10%	- Manipulate strings with character function in the SELECT and WHERE clauses - Manipulate dates with the date functions - Perform arithmetic with date data - Manipulate numbers with the ROUND, TRUNC, and MOD functions - Describe the differences between single-row and multiple-row functions

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Oracle Database SQL Sample Questions (Q191-Q196):

NEW QUESTION # 191
The PRODUCT_INFORMATION table has a UNIT_PRICE column of data type NUMBER (8, 2).
Evaluate this SQL statement:
SELECT TO_CHAR(unit_price, `$9,999') FROM product_information;
Which two statements are true about the output? (Choose two.)

A. A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,023.
B. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as $1,0236.
C. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as $1,023.
D. A row whose UNIT_PRICE column contains the value 1023.99 will be displayed as $1,024.
E. A row whose UNIT_PRICE column contains the value 10235.99 will be displayed as #######.

Answer: A,E

NEW QUESTION # 192
Which two statements are true regarding the COUNT function? (Choose two.)

A. A SELECT statement using COUNT function with a DISTINCT keyword cannot have a WHERE clause
B. COUNT(DISTINCT inv_amt) returns the number of rows excluding rows containing duplicates and NULL values in the INV_AMT column
C. COUNT(*) returns the number of rows including duplicate rows and rows containing NULL value in any of the columns
D. COUNT(cust_id) returns the number of rows including rows with duplicate customer IDs and NULL value in the CUST_ID column
E. The COUNT function can be used only for CHAR, VARCHAR2 and NUMBER data types

Answer: B,C

Explanation:
Using the COUNT Function
The COUNT function has three formats:
COUNT(*)
COUNT(expr)
COUNT(DISTINCT expr)
COUNT(*) returns the number of rows in a table that satisfy the criteria of the SELECT
statement, including duplicate rows and rows containing null values in any of the columns.
If a WHERE clause is included in the SELECT statement, COUNT(*) returns the number of
rows that satisfy the condition in the WHERE clause.
In contrast,
COUNT(expr) returns the number of non-null values that are in the column identified by
expr.
COUNT(DISTINCT expr) returns the number of unique, non-null values that are in the
column identified by expr.

NEW QUESTION # 193
View the exhibit and examine the data in ORDERS_MASTER and MONTHLY_ORDERS tables.
ORDERS_MASTER
ORDER_ID
ORDER_TOTAL
1
1000
2
2000
3
3000
4
MONTHLY_ORDERS
ORDER_ID
ORDER_TOTAL
2
2500
3
Evaluate the following MERGE statement:
MERGE_INTO orders_master o
USING monthly_orders m
ON (o.order_id = m.order_id)
WHEN MATCHED THEN
UPDATE SET o.order_total = m.order_total
DELETE WHERE (m.order_total IS NULL)
WHEN NOT MATCHED THEN
INSERT VALUES (m.order_id, m.order_total)
What would be the outcome of the above statement?

A. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 3.
B. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2, 3 and 4.
C. The ORDERS_MASTER table would contain the ORDER_IDs 1 and 2.
D. The ORDERS_MASTER table would contain the ORDER_IDs 1, 2 and 4.

Answer: D

Explanation:
Explanation
References:
https://docs.oracle.com/cd/B28359_01/server.111/b28286/statements_9016.htm

NEW QUESTION # 194
Examine the structure of the BOOKS_TRANSACTIONStable.

You want to update this table such that BOOK_IDis set to 'INVALID'for all rows where no MEMBER_ID has been entered.
Examine this partial SQL statement:

Which condition must be used in the WHEREclause to perform the required update?
MEMBER_ID = '';

A. MEMBER_ID IS NULL;
B. MEMBER_ID = "";
C.
D. MEMBER_ID = NULL;

Answer: A

NEW QUESTION # 195

Which two queries execute successfully?

A. SELECT * FROM products
UNION
SELECT * FROM new_products;
B. SELECT prod_id, exp_date FROM products
UNION ALL
SELECT prod_id, NULL FROM new_products;
C. SELECT prod_id FROM products
UNION ALL
SELECT prod_id, prod_name FROM new_products;
D. SELECT prod_id, prod_name FROM products
INTERSECT
SELECT 100, prod_name FROM newproducts;
E. SELECT k FROM products
MINUS
SELECT prod_id FROM new_products;

Answer: A,B

NEW QUESTION # 196
......

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