Penn Foster 418867 / 418867RR – Perfect Solution

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Problem Statement

Exam: 418867RR – Normalization, Physical Design, SQL, and Security
When you have completed your exam and reviewed your answers, click Submit Exam. Answers will not be recorded until you
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Questions 1 to 20: Select the best answer to each question. Note that a question and its answers may be split across a page
break, so be sure that you have seen the entire question and all the answers before choosing an answer.
1. Which language is used to manipulate data and data objects in a relational database?
A. XML
B. C++
C. XQuery
D. SQL
2. If you wanted to assign a user the permission to create schema and run ALTER on any user, what role
should you assign to that user?
A. db_datawriter
B. db_backupoperator
C. db_accessadmin
D. db_securityadmin
3. You’re working on setting a data type for a field that requires a high degree of precision, as it will be
taking scientific values. Which data type should you likely set for this field?
A. Real
B. Money
C. Int
D. Decimal
4. If you have a collection of related attributes that can be considered a subtheme for one of the entities
and you remove it, what form is the database now in?
A. Second normal
B. First normal
C. Third normal
D. Fourth normal
5. Which keyword yields the same results as using the >= and <= operators?
A. IS
B. LIKE
C. BETWEEN
D. WHERE
6. When a database system requests a login name and password to allow a user to enter the database, what
process is being performed?
A. Authorization
B. Mapping
C. Permission
D. Authentication
7. A role is a collection of _______, while a schema is a collection of _______ owned by a schema.
A. attributes, permissions
B. objects, attributes
C. objects, permissions
D. permissions, objects
8. Which of the following functions is a scalar function?
A. SUM
B. MAX
C. COUNT
D. MONTH
9. Of the seven types of normal forms, how many are considered the most critical for creating a working
database?
A. 2
B. 3
C. 5
D. 4
10. In testing, you find that one of the tables in your database has multiple versions of one of the columns,
and updating the information requires the user to go to several different places to make sure the update
completes. What process should you use to fix this kind of issue?
A. Insertion
B. Normalization
C. Denormalization
D. Compiling
11. In what year was the first ANSI standard for SQL issued?
A. 1999
B. 1992
C. 1987
D. 1986
12. _______ are rules about how to do things.
A. Procedures
B. Reports
C. Policies
D. Logs
13. You're looking for a DBMS to purchase and install for use with the database you're designing. Because
of future expansions, you want to stay away from systems that have file size limits. Which of the following
DBMSs should you likely avoid?
A. Oracle Express
B. MySQL
C. PostGres
D. Access
14. Why should you perform the denormalization process on a database?
A. Correct attribute names
B. Improve performance
C. Increase data protection
D. Correct incorrect linkages
15. What type of clause must you always use with DELETE or UPDATE to avoid inadvertently changing
data elsewhere in the database?
A. SET
B. ORDER
C. WHERE
D. FROM
16. If you wanted to set the data type for a field that will have different text inputs of varying length, and
you wanted the field to be able to handle Unicode, which data type should you likely use?
A. nvarchar
B. nchar
C. varchar
D. char
17. The database you're creating will be installed on a group of three servers. What feature of an enterprise
RDBMS will allow one server to pick up the processing work if the main server becomes nonoperational?
A. Load balancing
B. Business intelligence
C. Failover
D. Data warehouse
18. When users enter data into the database, they find they have to enter a value for every column, as the
database won't allow them to continue otherwise. What type of value has been disallowed for this
database?
A. 0
B. Duplicate
End of exam
C. Null
D. Tab key
19. If you're inputting the statement (6 + 7) × 4 – 8/2 in SQL, which operation should be performed first?
A. Parenthetical operation
B. Multiplication
C. Subtraction
D. Division
20. When checking the database, you confirm that the "Enforce Foreign Key Constraint" property is set to
"Yes," as expected. What property does this constraint create for the database?
A. Referential integrity
B. Third normal form
C. Functional dependency
D. Data redundancy

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