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Oracle 1z1-071 Exam Syllabus Topics:

Section	Weight	Objectives
Topic 1: Restricting and Sorting Data	6%	- Sort the rows that are retrieved by a query - Use ampersand substitution to restrict and sort output at runtime - Limit the rows that are retrieved by a query - Use DEFINE and UNDEFINE commands
Topic 2: Creating Other Schema Objects	10%	- Create and maintain indexes - Create, modify, and retrieve data from a view - Create synonyms for database objects - Create, maintain, and use sequences
Topic 3: Working with Oracle Database SQL	8%	- Start up and shut down a database - Describe the Oracle Database architecture - Explain the installation of Oracle Database software - Create a container database
Topic 4: Manipulating Data	14%	- Control transactions - Insert rows into a table - Delete rows from a table - Describe each data manipulation language (DML) statement - Update rows in a table
Topic 5: Using DDL Statements to Create and Manage Tables	14%	- Review the table structure - Create a simple table - Categorize the main database objects - Describe the data types that are available for columns - Alter table definitions - Drop, rename, and truncate tables
Topic 6: 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
Topic 7: Displaying Data from Multiple Tables Using Joins	15%	- View data that does not meet a join condition by using outer joins - Join a table to itself by using a self-join - Cross join tables - Write SELECT statements to access data from more than one table using equijoins and non-equijoins
Topic 8: 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
Topic 9: Using Single-Row Functions to Customize Output	10%	- 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 - Describe the differences between single-row and multiple-row functions - Manipulate dates with the date functions
Topic 10: Using Subqueries to Solve Queries	15%	- Write single-row and multi-row subqueries - List the types of subqueries - Define subqueries - Describe the types of problems that subqueries can solve
Topic 11: 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
Topic 12: Controlling User Access	5%	- Grant privileges on tables and on a view - Differentiate system privileges from object privileges - Distinguish between granting privileges and roles
Topic 13: 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

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Oracle Database SQL Sample Questions (Q210-Q215):

NEW QUESTION # 210
Which three statements are true about multiple row subqueries? (Choose three.)

A. They cannot contain a subquery.
B. They can contain GROUP BY clauses.
C. They can contain HAVINGclauses.
D. They can return multiple columns.
E. Two or more values are always returned from the subquery.

Answer: B,C,D

NEW QUESTION # 211
Which three statements about roles are true?

A. A single user can be assigned multiple roles
B. Roles are assigned to users using the ALTER USER statement
C. A single role can be assigned to multiple users.
D. Privileges are assigned to a role using the GRANT statement.
E. Roles are assigned to roles using the ALTER ROLE Statement
F. Privileges are assigned to a role using the ALTER ROLE statement.
G. A role is a named group of related privileges that can only be assigned to a user

Answer: A,C,D

Explanation:
Roles are named collections of privileges in Oracle databases.
A . False. Roles cannot be assigned to other roles using the ALTER ROLE statement.
B . False. Roles can be assigned to both users and other roles.
C . True. Roles are assigned to users using the ALTER USER statement, but this is not the only method.
D . True. A single role can be assigned to multiple users, simplifying the management of user privileges.
E . True. A single user can be assigned multiple roles.
F . False. Privileges are not assigned to a role using the ALTER ROLE statement.
G . True. Privileges are assigned to a role using the GRANT statement.
Reference:
Oracle Documentation on User Privileges and Roles: https://docs.oracle.com/database/121/DBSEG/authorization.htm#DBSEG99914

NEW QUESTION # 212
Examine the data in the EMPLOYEES table:

Which statement will compute the total annual compensation for each employee?

A. SELECT last_ name (monthly_ salary+ monthly_ commission _ pct) *12 AS annual_ FROM employees ;
B. SELECT last name,
(monthly salary*12) + (monthly_commission_pct * 12) AS
annual comp
FROM employees
;
C. SELECT last_ name, monthly_ salary*12) + (monthly_ salary * 12 * Monthly commission _Pct) AS annual_ comp FROM employees;
D. SELECT last name, (monthly_ salary *12) + (monthly_ salary * 12 * NVL (monthly commission pct,0) ) As annual _ comp FROM employees;

Answer: D

Explanation:
To calculate the total annual compensation, you need to sum the annual salary with the annual commission. The annual commission is the monthly commission percentage times the monthly salary times 12 (months). The NVL function is used to replace NULL with 0 for commission percentage when calculating the commission.
A: This statement is incorrect because it does not handle NULL values for 'monthly_commission_pct', which will result in NULL for the entire expression if 'monthly_commission_pct' is NULL.
B: This statement is syntactically incorrect because it lacks commas and proper parentheses to separate the column name 'last_ name' from the calculation.
C: This is the correct statement as it uses NVL to replace NULL with 0 and calculates the total annual compensation correctly.
D: This statement is incorrect because, like in option A, it does not handle NULL values in 'monthly_commission_pct', resulting in NULL if 'monthly_commission_pct' is NULL.

NEW QUESTION # 213
Which three statements are true about built-in data types?

A. A BLOB stores unstructured binary data within the database.
B. A CHAR column definition does not require the length to be specified.
C. The default length for a CHAR column is always one character.
D. A BFILE stores unstructured binary data in operating system files.
E. A VARCHAR2 blank-pads column values only if the data stored is non-numeric and contains no special characters.
F. A VARCHAR2 column definition does not require the length to be specified.

Answer: A,D

Explanation:
D: True. A BLOB (Binary Large Object) is used to store unstructured binary data within the Oracle Database. It can hold a variable amount of data.
F: True. A BFILE is a datatype in Oracle SQL used to store a locator (pointer) that points to binary data stored in operating system files outside of the Oracle Database.
Both BLOB and BFILE are used for large binary data but differ in where the data is actually stored - BLOB stores the data inside the Oracle Database, whereas BFILE stores the data in the file system outside the database.
Reference:
The Oracle Database SQL Language Reference guide details the characteristics and uses of BLOB and BFILE datatypes among others, describing their storage characteristics and data type definitions.

NEW QUESTION # 214
Examine the commands used to create DEPARTMENT_DETAILSand COURSE_DETAILS:
SQL>CREATE TABLE DEPARTMENT_DETAILS
( DEPARTMENT_ID NUMBER PRIMARY KEY,
DEPARTMENT_NAME VARCHAR2(50),
HOD VARCHAR2(50));
SQL>CREATE TABLE COURSE_DETAILS
(COURSE_ID NUMBER PRIMARY KEY,
COURSE_NAME VARCHAR2(50),
DEPARTMENT_ID VARCHAR2(50));
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 department_details d RIGHT OUTER JOIN course_details c 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 (d.department_id=c. 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 course_details c LEFT OUTER JOIN department_details d ON (c.department_id=d. department_id);

Answer: C

NEW QUESTION # 215
......

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