1. The ERD represents the ____ database as viewed by the end user.
A) condensed
B) physical
C) logical
D) conceptual
2. Some ____ database modeling concepts can be expressed only using the Chen notation.
A) developmental
B) conceptual
C) actual
D) specific
3. Attributes may share a ____.
A) name
B) domain
C) location
D) table
4. The set of possible values for an attribute is a ____.
A) domain
B) range
C) set
D) key
5. In an ER diagram, primary keys are indicated by ____.
A) bolding
B) italics
C) underlining
D) a special font
6. Ideally, an entity identifier is composed of ____ attribute(s).
A) zero
B) one
C) two
D) six
7. A ____ identifier is composed of more than one attribute.
A) primary
B) foreign
C) composite
D) domain
8. The ____ attribute(s) make up the primary key in the table definition: CLASS (CRS_CODE, CLASS_SECTION, CLASS_TIME, CLASS_ROOM, PROF_NUM)
A) CRS_CODE
B) CLASS_SECTION
C) CRS_CODE and CLASS_SECTION
D) There is no primary key
9. A ____ attribute can be further subdivided to yield additional attributes.
A) composite
B) simple
C) single-valued
D) multivalued
10. A ____ attribute is one that cannot be subdivided.
11. A ____ attribute can have only one value.
12. ____ attributes can have many values.
13. Some attributes are classified as ____.
A) simple
B) complex
C) defined
D) grouped
14. The ____ type of attribute cannot be created in a DBMS.
A) derived
B) multivalued
C) simple
D) composite
15. A ____ should be a derived attribute.
A) person's name
B) person's age
C) person's social security number
D) person's phone number
16. A derived attribute ____.
A) must be stored physically within the database
B) need not be physically stored within the database
C) has many values
D) must be based on the value of three or more attributes
17. A derived attribute is indicated in the Chen model by a ____.
A) single line
B) dashed line
C) circle
D) double line
18. A relationship is an association between ____.
A) objects
B) entities
C) databases
D) fields
19. Knowing the ____ number of entity occurrences is very helpful at the application software level.
A) maximum
B) minimum
C) approximate
D) maximum and minimum
20. In the ERD, cardinality is indicated using the ____ notation.
A) (max,min)
B) (min, max)
C) [min ... max]
D) {min\max}
21. Another word for existence-independent is ____.
A) weak
B) alone
C) unary
D) strong
22. An entity is said to be ____-dependent if it can exist in the database only when it is associated with another related entity occurrence.
A) existence
B) relationship
C) business
D) weak
23. If an entity can exist apart from one or more related entities, it is said to be ____-independent.
24. When the PK of one entity does not contain the PK of a related entity, the relationship is ____.
A) missing
B) weak
C) strong
D) Neutral
25. A ____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.
A) strong
D) relationship
26. The term “____”is used to label any condition in which one or more optional relationships exist.
A) participation
B) optionality
C) cardinality
D connectivity
27. The existence of a(n) ____ relationship indicates that the minimum cardinality is at least 1 for the mandatory entity
A) mandatory
B) optional
C) multivalued
D) single-valued
28. The Crow’s foot symbol with two parallel lines indicates ____ cardinality.
A) (0,N)
B) (1,N)
C) (1,1)
D) (0,1)
29. A ____ relationship exists when an association is maintained within a single entity.
A) unary
B) ternary
C) binary
30. A ____ relationship exists when two entities are associated.
B) binary
C) ternary
31. A ____ relationship exists when three entities are associated.
32. ____ relationships are most common.
D) higher-degree
33. If an employee within an EMPLOYEE entity has a relationship with itself, that relationship is known as a ____ relationship.
A) self
B) self-referring
C) looping
D) recursive
34. A(n) ____ entity is composed of the primary keys of each of the entities to be connected.
A) associative
B) recursive
D) binary
35. The associative entity is also known as a ____ entity.
36. The following step occurs first in the process of building an ERD: ____.
A) Develop the initial ERD
B) Create a detailed narrative of the organization's description of operations
C) Identify the attributes and primary keys that adequately describe the entities.
D) Identify the business rules based on the description of operations.
37. If Tiny College had some departments that were classified as “research only,” they would not offer courses; therefore, the COURSE entity would be ____ to the DEPARTMENT entity
A) existence-dependent
B) independent
C) weak
D) optional
38. The M:N relationship between STUDENT and CLASS must be divided into two 1:M relationships through the use of the ENROLL entity; the ENROLL entity is ____.
B) strong
C) optional
D) mandatory
39. If the focus is on data-retrieval speed, you might also be forced to include ____ attributes in the design, which would not ordinarily be done.
A) multivalued
B) composite
D) derived
40. Complex ____ requirements may dictate data transformations, and they may expand the number of entities and attributes within the design.
A) information
B) entity
C) design
D) processing
