Exam 1 Comprehensive Review - CIS 3060, Database Management Systems

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Chapter 1 Quiz (Database Systems), Chapter 2 Quiz (Data Models), Chapter 3 Quiz (The Relational Database), Chapter 4 (Entity Relationship Modeling), Chapter 6

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60 Terms

1
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Which of the following statements is true?

A DBMS is a set of processes that manage and control access to data stored in the database.

2
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Which of the following is not an advantage of a DBMS?

Complexity

3
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What is the result of redundant data in the database?

Data anomalies that lead to data inconsistencies

4
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What are the components of database systems?

Hardware, software, people, procedures, data

5
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Which of the following statements best defines a record?

A record is a set of logically connected fields.

6
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Which of the following is not a disadvantage of DBMS?

Data Integration

7
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Which of the following is not a function of a DBMS?

User Management

8
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Which of the following is not a valid statement?

Raw data is the collection of processed knowledge.

9
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Which of the following is not a valid statement?

Production databases focus primarily on storing historical data and business metrics used exclusively for tactical or strategic decision making.

10
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Which of the following lists problems with file system data processing?

Development complexity, administration complexity, and lack of security

11
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Which of the following is a fundamental data modeling component, helping ensure data integrity?

Constraint

12
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Which of the following is not a valid business rule?

An invoice must be paid in a reasonable amount of time.

13
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Why is identifying and documenting business rules essential to database design?

It helps to standardize the company's view of data.

14
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Which of the following two-dimensional structures is known as a relation?

Table

15
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In an entity relational model (ERD), what is each row in a table known as?

An entity occurrence

16
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Which of the following is a disadvantage of various database models?

System complexity

17
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Which of the following entity relationship (ER) connectivity statements is invalid?

A CUSTOMER gender is MALE or FEMALE

18
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Which of the following is not a valid component of object-oriented data models?

Volume

19
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A CEO of a company wants to find a new and improved way to manage and extract business insights from large amounts of web- and sensor-generated data. Which of the following could they use to achieve this goal?

Big Data

20
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Which of the following technologies is not used in Big Data?

SQL

21
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Which of the following is not a valid characteristic of a relational table?

All values in a column may have different data formats.

22
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Which of the following statements best describes a functional dependency?

The value of one or more attributes determines the value of one or more other attributes.

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Which of the following is not a legitimate DB key in a relational model?

Entity Key

24
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Which of the following statements best defines the purpose of entity integrity?

It guarantees each entity has a unique value for the primary key and that there are no null key values.

25
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Dr. Codd published a list of 12 relational database rules in 1985; which of the following is not a valid rule?

Any database view that is theoretically updatable must be updated outside of the database structure.

26
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Which of the following best describes an index?

An index is an orderly arrangement used to logically access rows in a table.

27
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A composite entity is also referred to as a _____ entity.

bridge

28
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The proper use of foreign keys _____ data redundancies and the chances that destructive data anomalies will develop.

minimizes

29
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Which of the following statements best defines a data dictionary?

The data dictionary provides a detailed description of all tables in the database created by the user and designer.

30
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Which of the following is not a valid relational set operator?

ADD Operator

31
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When working with entity relationship models (ERM), which of the following is not a valid statement regarding an entity?

An entity is an object of interest to the end designer.

32
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In an entity relationship model (ERM), attributes are characteristics of entities. Which of the following statements best describe an optional attribute?

An optional attribute is an attribute that does not require a value and can be left empty.

33
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What type of attribute allows for no more than one value?

Single-valued attribute

34
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The CUSTOMER entity includes the attributes CUST_LNAME, CUST_FNAME, CUST_PHONE, and CUST_PHONE_TYPE. The CUST_PHONE_TYPE attribute stores the string "HOME, WORK, MOBILE, OTHER". Which term best describes CUST_PHONE_TYPE?

Multivalued attribute

35
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A derived attribute is an attribute whose value is calculated (derived) from other attributes. What is not an advantage of storing derived attributes in the database?

Uses CPU processing cycles

36
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What type of entity can exist in the database only when it is associated with another related entity?

Existence-dependent

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What element expresses the specific number of entity occurrences associated with an occurrence of a related entity?

Cardinality

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A relationship degree indicates the number of entities or participants associated with a relationship. Which is not a valid relationship that's specifically named?

Quarterly relationship

39
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Database designers must often compromise design due to conflicting goals. What are examples of contradictory goals in database design?

Design standards, processing speed, and information requirements

40
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While a relationship degree indicates the number of entities associated with a relationship, which relationship type is within a single entity type?

Recursived relationship

41
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Normalization is a process for evaluating and correcting table structures to minimize _____.

data redundancy and anomalies

42
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Which of the following is false about unnormalized data?

Unnormalized data is related data.

43
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Which of the following is NOT true?

Fourth normal form (4NF): 3NF and no dependent multivalued dependencies

44
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Which of the following statements best describes partial dependency?

A partial dependency exists when there is a functional dependence in which the determinant is only part of the primary key.

45
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Which of the following statements best defines transitive dependency?

d. A condition in which an attribute is dependent on another attribute that is not part of the primary key

46
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Repeating group is defined as _____.

a characteristic describing a group of multiple entries of the same or multiple types for a single key attribute occurrence

47
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Atomicity refers to?

An attribute is atomic that cannot be further subdivided.

48
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Which of the following is not valid about the ER model?

Should contain redundant relationships except as required

49
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Which of the following is not valid related to attribute naming convention?

Should not use the entity abbreviation as a prefix

50
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Which of the following is valid?

Each entity should represent a set of distinguishable entity instances.

51
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<p><span>STUDENT_ID Consistent or Inconsistent? </span></p>

STUDENT_ID Consistent or Inconsistent?

Inconsistent

52
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<p>STUDENT_NAME Consistent or Inconsistent? </p>

STUDENT_NAME Consistent or Inconsistent?

Consistent

53
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<p>ADDRESS Consistent or Inconsistent? </p>

ADDRESS Consistent or Inconsistent?

Consistent

54
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<p>CITY Consistent or Inconsistent? </p>

CITY Consistent or Inconsistent?

Inconsistent

55
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<p>STATE Consistent or Inconsistent? </p>

STATE Consistent or Inconsistent?

Inconsistent

56
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<p>PHONE Consistent or Inconsistent? </p>

PHONE Consistent or Inconsistent?

Inconsistent

57
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<p>Your company is concerned there is a problem with the design of some of the database tables. They want you to look at the tables and determine if there is a problem. Management is concerned about data anomalies and data redundancies. They have stressed it is important to have correct design as it is used for making decisions and used as a basis for reports in the various departments.</p><p>Examine the fields in each table and determine if the table is designed correctly or incorrectly.</p><p>STUDENT TABLE</p>

Your company is concerned there is a problem with the design of some of the database tables. They want you to look at the tables and determine if there is a problem. Management is concerned about data anomalies and data redundancies. They have stressed it is important to have correct design as it is used for making decisions and used as a basis for reports in the various departments.

Examine the fields in each table and determine if the table is designed correctly or incorrectly.

STUDENT TABLE

Incorrect

58
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<p>Your company is concerned there is a problem with the design of some of the database tables. They want you to look at the tables and determine if there is a problem. Management is concerned about data anomalies and data redundancies. They have stressed it is important to have correct design as it is used for making decisions and used as a basis for reports in the various departments.</p><p>Examine the fields in each table and determine if the table is designed correctly or incorrectly.</p><p>ADVISOR TABLE</p>

Your company is concerned there is a problem with the design of some of the database tables. They want you to look at the tables and determine if there is a problem. Management is concerned about data anomalies and data redundancies. They have stressed it is important to have correct design as it is used for making decisions and used as a basis for reports in the various departments.

Examine the fields in each table and determine if the table is designed correctly or incorrectly.

ADVISOR TABLE

Correct

59
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<p>Your company is concerned there is a problem with the design of some of the database tables. They want you to look at the tables and determine if there is a problem. Management is concerned about data anomalies and data redundancies. They have stressed it is important to have correct design as it is used for making decisions and used as a basis for reports in the various departments.</p><p>Examine the fields in each table and determine if the table is designed correctly or incorrectly.</p><p>DORM TABLE</p>

Your company is concerned there is a problem with the design of some of the database tables. They want you to look at the tables and determine if there is a problem. Management is concerned about data anomalies and data redundancies. They have stressed it is important to have correct design as it is used for making decisions and used as a basis for reports in the various departments.

Examine the fields in each table and determine if the table is designed correctly or incorrectly.

DORM TABLE

Incorrect

60
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