6274724
Questão 1
Questão
1. The ERD represents the ____ database as viewed by the end user.
Responda
-
A) condensed
-
B) physical
-
C) logical
-
D) conceptual
Questão 2
Questão
2. Some ____ database modeling concepts can be expressed only using the Chen notation.
Responda
-
A) developmental
-
B) conceptual
-
C) actual
-
D) specific
Questão 3
Questão
3. Attributes may share a ____.
Responda
-
A) name
-
B) domain
-
C) location
-
D) table
Questão 4
Questão
4. The set of possible values for an attribute is a ____.
Responda
-
A) domain
-
B) range
-
C) set
-
D) key
Questão 5
Questão
5. In an ER diagram, primary keys are indicated by ____.
Responda
-
A) bolding
-
B) italics
-
C) underlining
-
D) a special font
Questão 6
Questão
6. Ideally, an entity identifier is composed of ____ attribute(s).
Responda
-
A) zero
-
B) one
-
C) two
-
D) six
Questão 7
Questão
7. A ____ identifier is composed of more than one attribute.
Responda
-
A) primary
-
B) foreign
-
C) composite
-
D) domain
Questão 8
Questão
8. The ____ attribute(s) make up the primary key in the table definition: CLASS (CRS_CODE, CLASS_SECTION, CLASS_TIME, CLASS_ROOM, PROF_NUM)
Responda
-
A) CRS_CODE
-
B) CLASS_SECTION
-
C) CRS_CODE and CLASS_SECTION
-
D) There is no primary key
Questão 9
Questão
9. A ____ attribute can be further subdivided to yield additional attributes.
Responda
-
A) composite
-
B) simple
-
C) single-valued
-
D) multivalued
Questão 10
Questão
10. A ____ attribute is one that cannot be subdivided.
Responda
-
A) composite
-
B) simple
-
C) single-valued
-
D) multivalued
Questão 11
Questão
11. A ____ attribute can have only one value.
Responda
-
A) composite
-
B) simple
-
C) single-valued
-
D) multivalued
Questão 12
Questão
12. ____ attributes can have many values.
Responda
-
A) composite
-
B) simple
-
C) single-valued
-
D) multivalued
Questão 13
Questão
13. Some attributes are classified as ____.
Responda
-
A) simple
-
B) complex
-
C) defined
-
D) grouped
Questão 14
Questão
14. The ____ type of attribute cannot be created in a DBMS.
Responda
-
A) derived
-
B) multivalued
-
C) simple
-
D) composite
Questão 15
Questão
15. A ____ should be a derived attribute.
Responda
-
A) person's name
-
B) person's age
-
C) person's social security number
-
D) person's phone number
Questão 16
Questão
16. A derived attribute ____.
Responda
-
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
Questão 17
Questão
17. A derived attribute is indicated in the Chen model by a ____.
Responda
-
A) single line
-
B) dashed line
-
C) circle
-
D) double line
Questão 18
Questão
18. A relationship is an association between ____.
Responda
-
A) objects
-
B) entities
-
C) databases
-
D) fields
Questão 19
Questão
19. Knowing the ____ number of entity occurrences is very helpful at the application software level.
Responda
-
A) maximum
-
B) minimum
-
C) approximate
-
D) maximum and minimum
Questão 20
Questão
20. In the ERD, cardinality is indicated using the ____ notation.
Responda
-
A) (max,min)
-
B) (min, max)
-
C) [min ... max]
-
D) {min\max}
Questão 21
Questão
21. Another word for existence-independent is ____.
Responda
-
A) weak
-
B) alone
-
C) unary
-
D) strong
Questão 22
Questão
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.
Responda
-
A) existence
-
B) relationship
-
C) business
-
D) weak
Questão 23
Questão
23. If an entity can exist apart from one or more related entities, it is said to be ____-independent.
Responda
-
A) existence
-
B) relationship
-
C) business
-
D) weak
Questão 24
Questão
24. When the PK of one entity does not contain the PK of a related entity, the relationship is ____.
Responda
-
A) missing
-
B) weak
-
C) strong
-
D) Neutral
Questão 25
Questão
25. A ____ entity has a primary key that is partially or totally derived from the parent entity in the relationship.
Responda
-
A) strong
-
B) weak
-
C) business
-
D) relationship
Questão 26
Questão
26. The term “____”is used to label any condition in which one or more optional relationships exist.
Responda
-
A) participation
-
B) optionality
-
C) cardinality
-
D connectivity
Questão 27
Questão
27. The existence of a(n) ____ relationship indicates that the minimum cardinality is at least 1 for the mandatory entity
Responda
-
A) mandatory
-
B) optional
-
C) multivalued
-
D) single-valued
Questão 28
Questão
28. The Crow’s foot symbol with two parallel lines indicates ____ cardinality.
Responda
-
A) (0,N)
-
B) (1,N)
-
C) (1,1)
-
D) (0,1)
Questão 29
Questão
29. A ____ relationship exists when an association is maintained within a single entity.
Responda
-
A) unary
-
B) ternary
-
C) binary
-
D) weak
Questão 30
Questão
30. A ____ relationship exists when two entities are associated.
Responda
-
A) unary
-
B) binary
-
C) ternary
-
D) weak
Questão 31
Questão
31. A ____ relationship exists when three entities are associated.
Responda
-
A) unary
-
B) binary
-
C) ternary
-
D) weak
Questão 32
Questão
32. ____ relationships are most common.
Responda
-
A) unary
-
B) binary
-
C) ternary
-
D) higher-degree
Questão 33
Questão
33. If an employee within an EMPLOYEE entity has a relationship with itself, that relationship is known as a ____ relationship.
Responda
-
A) self
-
B) self-referring
-
C) looping
-
D) recursive
Questão 34
Questão
34. A(n) ____ entity is composed of the primary keys of each of the entities to be connected.
Responda
-
A) associative
-
B) recursive
-
C) unary
-
D) binary
Questão 35
Questão
35. The associative entity is also known as a ____ entity.
Responda
-
A) unary
-
B) weak
-
C) strong
-
D) composite
Questão 36
Questão
36. The following step occurs first in the process of building an ERD: ____.
Responda
-
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.
Questão 37
Questão
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
Responda
-
A) existence-dependent
-
B) independent
-
C) weak
-
D) optional
Questão 38
Questão
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 ____.
Responda
-
A) weak
-
B) strong
-
C) optional
-
D) mandatory
Questão 39
Questão
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.
Responda
-
A) multivalued
-
B) composite
-
C) weak
-
D) derived
Questão 40
Questão
40. Complex ____ requirements may dictate data transformations, and they may
expand the number of entities and attributes within the design.
Responda
-
A) information
-
B) entity
-
C) design
-
D) processing
Quer criar seus próprios Quizzes gratuitos com a GoConqr? Saiba mais.