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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
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 - Describe the data types that are available for columns - Categorize the main database objects
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
Restricting and Sorting Data	6%	- Sort the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands - Use ampersand substitution to restrict and sort output at runtime - Limit the rows that are retrieved by a query
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
Using Set Operators	5%	- Use a set operator to combine multiple queries into a single query - Describe set operators - Describe the order of precedence when the set operators are used
Using Conversion Functions and Conditional Expressions	10%	- Use conditional IF THEN ELSE logic in a SELECT statement - Apply the NVL, NULLIF, and COALESCE functions to data - Use the TO_CHAR, TO_NUMBER, and TO_DATE conversion functions - Describe implicit and explicit data type conversion
Controlling User Access	5%	- Grant privileges on tables and on a view - Distinguish between granting privileges and roles - Differentiate system privileges from object privileges
Working with Oracle Database SQL	8%	- Explain the installation of Oracle Database software - Start up and shut down a database - Create a container database - Describe the Oracle Database architecture
Using Single-Row Functions to Customize Output	10%	- Manipulate numbers with the ROUND, TRUNC, and MOD functions - Manipulate dates with the date functions - Manipulate strings with character function in the SELECT and WHERE clauses - Perform arithmetic with date data - Describe the differences between single-row and multiple-row functions
Creating Other Schema Objects	10%	- Create, maintain, and use sequences - Create and maintain indexes - Create synonyms for database objects - Create, modify, and retrieve data from a view
Retrieving Data Using the SQL SELECT Statement	5%	- Execute a basic SELECT statement - Differentiate between SQL statements and SQL*Plus commands - List the capabilities of SQL SELECT statements
Using Subqueries to Solve Queries	15%	- Describe the types of problems that subqueries can solve - Write single-row and multi-row subqueries - List the types of subqueries - Define subqueries
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

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Oracle Database SQL Sample Questions (Q196-Q201):

NEW QUESTION # 196
Which three actions can you perform only with system privileges?

A. Query any table in a database.
B. Execute a procedure in another schema.
C. Use the WITH GRANT OPTION clause.
D. Log in to a database.
E. Truncate a table in another schema.
F. Access flat files via a database, which are stored in an operating system directory.

Answer: D,E,F

Explanation:
A . Correct. Truncating a table, especially in another schema, requires the ALTER ANY TABLE or DROP ANY TABLE system privilege. B. Correct. Accessing external files through the database involves the CREATE ANY DIRECTORY privilege, which is a system privilege. C. Correct. Creating a session in a database, which is required to log in, necessitates the CREATE SESSION system privilege. D. Incorrect. Querying any table is an object privilege, which can be granted by the owner of the table. E. Incorrect. The WITH GRANT OPTION clause is used with object privileges, not system privileges. F. Incorrect. Executing a procedure in another schema requires the EXECUTE object privilege on that procedure.
Oracle Database Security Guide provides the details about system privileges necessary for these actions.

NEW QUESTION # 197
Which two tasks can be performed by using Oracle SQL statements? (Choose two.)

A. executing operating system (OS) commands in a session
B. querying data from tables in different databases
C. connecting to a database instance
D. changing the password for an existing database user
E. starting up a database instance

Answer: B,D

Explanation:
References:
http://www.techonthenet.com/oracle/password.php
https://docs.oracle.com/cd/B28359_01/server.111/b28324/tdpii_distdbs.htm

NEW QUESTION # 198

For each employee in department 90 you want to display:
1. their last name
2. the number of complete weeks they have been employed
The output must be sorted by the number of weeks, starting with the longest serving employee first.Which statement will accomplish this?

A. SELECT last_name, ROUND( (SYSDATE - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure ;
B. SELECT last_name, ROUND( (SYSDATE - hire_ date) 17) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure DESC;
C. SELECT last_name, TRUNC( (SYSDATE - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_ id = 90
ORDER BY tenure ;
D. SELECT last_name, TRUNC ( (SYSDATE - - hire_ date) 1 7) AS tenure
FROM employees
WHERE department_id = 90
ORDER BY tenure DESC;

Answer: D

Explanation:
D). True. The TRUNC function, when applied to the difference between SYSDATE and hire_date divided by
7, will return the number of complete weeks of employment. The ORDER BY tenure DESC will sort the result in descending order, starting with the longest-serving employee.
A is incorrect because it does not include the DESC keyword necessary to start with the longest-serving employee. B is incorrect because ROUND could result in rounding up to the next week, which does not give the number of complete weeks. C is incorrect because the division is done by 17 instead of 7, which is likely a typo, and ROUND is used instead of TRUNC.

NEW QUESTION # 199
Which two statements are true about the rules of precedence for operators?

A. Multiple parentheses can be used to override the default precedence of operators in an expression.
B. The + binary operator has the highest precedence in an expression in a SQL statements.
C. Arithmetic operators with equal precedence are evaluated from left to right within an expression.
D. NULLS influence the precedence of operators in an expression.
E. The concatenation operator || is always evaluated before addition and subtraction in an expression.

Answer: A,C

NEW QUESTION # 200
You must find the number of employees whose salary is lower than employee 110.
Which statement fails to do this?

A. SELECT COUNT (*)
FROM employees
JOIN employees a
ON e. salary<
a. salary
WHERE a. employee_ id= 110;
B. SELECT COUNT (* )
FROM employees e
WHERE e. salary < (SELECT a. salary FROM employees a WHERE e. employee_ id = 110);
C. SELECT COUNT (*)
FROM employees e
JOIN (SELECT salary FROM employees WHERE employee_ id= 110) a
ON e. salary< a. salary;
D. SELECT COUNT (* )
FROM employees
WHERE salary < (SELECT salary FROM employees WHERE employee id =
110) ;

Answer: B

NEW QUESTION # 201
......

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