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Oracle 1z0-071 Exam Syllabus Topics:

Section	Weight	Objectives
Retrieving Data Using the SQL SELECT Statement	5%	- Execute a basic SELECT statement - List the capabilities of SQL SELECT statements - Differentiate between SQL statements and SQL*Plus commands
Creating Other Schema Objects	10%	- Create and maintain indexes - Create synonyms for database objects - Create, modify, and retrieve data from a view - Create, maintain, and use sequences
Using Subqueries to Solve Queries	15%	- Describe the types of problems that subqueries can solve - List the types of subqueries - Write single-row and multi-row subqueries - Define subqueries
Using Single-Row Functions to Customize Output	10%	- Manipulate numbers with the ROUND, TRUNC, and MOD functions - Describe the differences between single-row and multiple-row functions - Manipulate dates with the date functions - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data
Restricting and Sorting Data	6%	- Use ampersand substitution to restrict and sort output at runtime - Use DEFINE and UNDEFINE commands - Limit the rows that are retrieved by a query - Sort the rows that are retrieved by a query
Working with Oracle Database SQL	8%	- Explain the installation of Oracle Database software - Start up and shut down a database - Describe the Oracle Database architecture - Create a container database
Reporting Aggregated Data Using Group Functions	15%	- Describe the use of group functions - Group data by using the GROUP BY clause - Identify the available group functions - Include or exclude grouped rows by using the HAVING clause
Displaying Data from Multiple Tables Using Joins	15%	- 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 - Cross join tables
Using Set Operators	5%	- Describe set operators - Describe the order of precedence when the set operators are used - Use a set operator to combine multiple queries into a single query
Controlling User Access	5%	- Distinguish between granting privileges and roles - Differentiate system privileges from object privileges - Grant privileges on tables and on a view
Using DDL Statements to Create and Manage Tables	14%	- Categorize the main database objects - Create a simple table - Review the table structure - Alter table definitions - Describe the data types that are available for columns - Drop, rename, and truncate tables
Manipulating Data	14%	- Insert rows into a table - Control transactions - Update rows in a table - Describe each data manipulation language (DML) statement - Delete rows from a table
Using Conversion Functions and Conditional Expressions	10%	- Describe implicit and explicit data type conversion - 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

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Oracle Database SQL Sample Questions (Q135-Q140):

NEW QUESTION # 135
Examine the structure of the members table:

Which query can be used to display the last names and city names only for members from the states MO and MI?

A. SELECT last_name, city FROM members WHERE state LIKE 'M%';
B. SELECT DISTINCT last_name, city FROM members WHERE state ='MO' OR state
='MI';
C. SELECT last_name, city FROM members WHERE state ='MO' AND state ='MI';
D. SELECT last_name, city FROM members WHERE state IN ('MO', 'MI');

Answer: D

NEW QUESTION # 136
Which two statements are true about CURRENT_TIMEITAMP?

A. The time is in the time zone of DBTIMEZONE.
B. It returns the same date as CURRENT_DATE.
C. It returns a value of data type TIMESTAMP
D. The value varies depending on the setting of SESSIONTIMEZONE.
E. It always returns the same value as SYSTIMESTAMP
F. The date is in the time zone of DBTIMEZONE.

Answer: C,D

Explanation:
B). True. CURRENT_TIMESTAMP returns the current date and time in the session time zone, which is determined by the SESSIONTIMEZONE setting.
E). True. CURRENT_TIMESTAMP returns a value of the data type TIMESTAMP WITH TIME ZONE.
A and D are incorrect because CURRENT_TIMESTAMP reflects the session time zone, not DBTIMEZONE. C is incorrect because CURRENT_DATE returns the current date with no time component, whereas CURRENT_TIMESTAMP includes both date and time. F is incorrect because SYSTIMESTAMP returns the current date and time from the system clock in the time zone of the database server, which can differ from the session's time zone affecting CURRENT_TIMESTAMP.

NEW QUESTION # 137
View the Exhibit and examine the details of the ORDER_ITEMS table.

Evaluate the following SQL statements:
Statement 1:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items;
Statement 2:
SELECT MAX(unit_price*quantity) "Maximum Order"
FROM order_items
GROUP BY order_id;
Which statements are true regarding the output of these SQL statements? (Choose all that apply.)

A. Both statements would ignore NULL values for the UNIT_PRICE and QUANTITY columns.
B. Statement 2 would return multiple rows of output.
C. Both the statements would give the same output.
D. Statement 1 would not return give the same output.
E. Statement 1 would return only one row of output.

Answer: A,B,E

NEW QUESTION # 138
View the exhibit and examine the structures of the EMPLOYEESand DEPARTMENTStables.
EMPLOYEES
Name Null? Type
- ---------------- ----- -------------
EMPLOYEE_ID NOT NULL NUMBER(6)
FIRST_NAME VARCHAR2(20)
LAST_NAME NOT NULL VARCHAR2(25)
HIRE_DATE NOT NULL DATE
JOB_ID NOT NULL VARCHAR2(10)
SALARY NUMBER(10,2)
COMMISSION NUMBER(6,2)
MANAGER_ID NUMBER(6)
DEPARTMENT_ID NUMBER(4)
DEPARTMENTS
Name Null? Type
----------------- ----- -------------
DEPARTMENT_ID NOT NULL NUMBER(4)
DEPARTMENT_NAME NOT NULL VARCHAR2(30)
MANAGER_ID NUMBER(6)
LOCATION_ID NUMBER(4)
You want to update EMPLOYEEStable as follows:
Update only those employees who work in Boston or Seattle (locations 2900 and 2700).

Set department_idfor these employees to the department_idcorresponding to London

(location_id 2100).
Set the employees' salary in location_id2100 to 1.1 times the average salary of their department.

Set the employees' commission in location_id2100 to 1.5 times the average commission of their

department.
You issue the following command:
SQL> UPDATE employees
SET department_id
( SELECT department_id
FROM departments
WHERE location_id = 2100),
( salary, commission)
( SELECT 1.1*AVG(salary), 1.5*AVG(commission)
FROM employees, departments
WHERE departments.location_id IN(2900, 2700, 2100))
WHERE department_id IN
( SELECT department_id
FROM departments
WHERE location_id = 2900
OR location_id = 2700;
What is outcome?

A. It generates an error because a subquery cannot have a join condition in a UPDATEstatement.
B. It executes successfully but does not give the correct result.
C. It executes successfully and gives the correct result.
D. It generates an error because multiple columns (SALARY, COMMISSION)cannot be specified together in an UPDATEstatement.

Answer: B

NEW QUESTION # 139
which three statements are true about indexes and their administration in an Oracle database?

A. The same table column can be part of a unique and non-unique index
B. AN INDEX CAN BE CREATED AS part of a CREATE TABLE statement
C. IF a query filters on an indexed column then it will always be used during execution of query
D. A DESCENDING INDEX IS A type of function-based index
E. AN INVISIBLE INDEX is not maintained when DML is performed on its underlying table.
F. A DROP INDEX statement always prevents updates to the table during the drop operation

Answer: A,B,E

Explanation:
A). True, a single table column can be included in both a unique index and a non-unique index, provided they are different indexes.
D). True, an invisible index is maintained during DML operations, which means it is updated when insert, update, or delete operations are performed on the table. However, it is not used by the optimizer by default for query execution unless explicitly hinted or the session is altered to consider invisible indexes.
E). True, an index can be specified in the CREATE TABLE statement using the INDEX clause to create an index on a specific column at the time of table creation.
B, C, and F are not correct: B. A descending index is simply an index that is sorted in descending order, not a type of function-based index. C. A DROP INDEX

NEW QUESTION # 140
......

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