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ISA 245 Chapter 2 Exam With 100% Correct And Verified Answers
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ISA 245 Chapter 2 Exam With 100% Correct And Verified Answers
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ISA 245 Chapter 2 Exam With 100%Correct And Verified Answers
Attribute - Correct Answer-A characteristic of an entity or
object. An attribute has a name and a data type.
business rule - Correct Answer-A description of a policy,
procedure, or principle within an organization. For example,
a pilot cannot be on duty for more than 10 hours during a
24-hour period, or a professor may teach up to four classes
during a semester.
Class - Correct Answer-A collection of similar objects with
shared structure (attributes) and behavior (methods). A
class encapsulates an object's data representation and a
methods implementation
class hierarchy - Correct Answer-the organization of classes
in a hierarchical tree in which each parent class is a super
class and each child class is a subclass.
conceptual model - Correct Answer-The output of the
conceptual design process. The conceptual model provides a
global view of an entire database and describes the main
data objects, avoiding detail
conceptual schema - Correct Answer-A representation of
conceptual model, usually expressed graphically
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, Connectivity - Correct Answer-The type of relationship
between entities. Classifications include (1:1, 1:M, M:N)
Constraint - Correct Answer-A restriction placed on data,
usually expressed in the form of rules. For example, "a
student's GPA must be between 0.00 and 4.00".
Crow's Foot notation - Correct Answer-A representation of
entity relationship diagram that uses a three- pronged
symbol to represent the "many" sides of the relationship
data model - Correct Answer-A representation, usually
graphic, of a complex "real-world" data structure. Data
models are used in the database design phase of the database
life cycle.
Entity - Correct Answer-A person, place, thing, concept, or
event for which data can be stored
entity instance - Correct Answer-A row in a relational table
entity occurrence - Correct Answer-A row in a relational
table
entity relationship diagram(ERD) - Correct Answer-A
diagram that depicts an entity relationship model's entities,
attributes, and relations
entity relationship model - Correct Answer-A data model
that describes relationships (1:m, 1:1) among entities at the
conceptual level with the help of ER diagrams.
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