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Oracle 1z0-071 Exam Syllabus Topics:

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

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Oracle Database SQL Sample Questions (Q113-Q118):

NEW QUESTION # 113
Examine the commands used to create DEPARTMENT_DETAILS and COURSE_DETAILS tables:

You want to generate a list of all department IDs along with any course IDs that may have been assigned to them.
Which SQL statement must you use?

A. SELECT d.department_id, c.course_id FROM course_details c LEFT OUTER JOIN department_details d ON (c.department_id=d.department_id);
B. SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN course_details c ON (c.department_id=d.department_id);
C. SELECT d.department_id, c.course_id FROM department_details d LEFT OUTER JOIN course_details c ON (d.department_id=c.department_id);
D. SELECT d.department_id, c.course_id FROM department_details d RIGHT OUTER JOIN course_details c ON (d.department_id=c.department_id);

Answer: C

NEW QUESTION # 114
Examine the description of the EMPLOYEES table:

Which query requires explicit data type conversion?

A. SELECT join_date FROM employees WHERE join_date > '10-02-2018';
B. SELECT salary + '120.50' FROM employees;
C. SELECT join_date || ' ' || salary FROM employees;
D. SELECT join_date + '20' FROM employees;
E. SELECT SUBSTR(join_date, 1, 2) - 10 FROM employees;

Answer: A

NEW QUESTION # 115
In the EMPLOYEES table there are 1000 rows and employees are working in the company for more than 10 years.
Evaluate the following SQL statement:

What would be the result?

A. It gives an error because multiple NVL functions are used in an expression.
B. It executes successfully but no rows updated.
C. It executes successfully and updates the records of those employees who have been working in the company for more than 600 days.
D. It gives an error because NVL function cannot be used with UPDATE.

Answer: C

NEW QUESTION # 116
Which three statements are true about inner and outer joins?

A. Outer joins can only be used between two tables per query.
B. A left or right outer join returns only unmatched rows.
C. Outer joins can be used when there are multiple join conditions on two tables.
D. An inner join returns matched rows.
E. A full outer join returns matched and unmatched rows.
F. A full outer join must use Oracle syntax.

Answer: D,E

Explanation:
A: True. A full outer join does indeed return both matched and unmatched rows from both tables involved in the join. It combines the results of both left and right outer joins.
E: True. An inner join, by definition, returns rows that have matching values in both tables. Rows from both tables that do not match are not returned in an inner join result set.
Inner joins match rows from the joined tables based on the join condition, while outer joins include all rows from one or both tables regardless of whether a matching row exists in the other table.
Reference:
The Oracle SQL documentation explains different types of joins, including inner joins, left and right outer joins, and full outer joins, clarifying how they differ in the result sets they produce.

NEW QUESTION # 117
View the Exhibit and examine the structure in the DEPARTMENTS tables. (Choose two.)

Examine this SQL statement:
SELECT department_id "DEPT_ID", department_name, 'b' FROM
departments
WHERE departments_id=90
UNION
SELECT department_id, department_name DEPT_NAME, 'a' FROM
departments
WHERE department_id=10
Which two ORDER BY clauses can be used to sort the output?

A. ORDER BY 3;
B. ORDER BY DEPT_ID;
C. ORDER BY DEPT_NAME;
D. ORDER BY 'b';

Answer: A,B

NEW QUESTION # 118
......

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