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Systems analysis and Design
Chp 4
33
Computer Networking
Undergraduate 4
04/17/2012

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Cards

Term
Problem Domain
Definition
the specific area or domain of the user’s business need or problem that is within the scope of the new system
Term
Brainstorming technique
Definition
a technique to identify problem domain objects in which developers work with users in an open group setting
Term
Noun technique
Definition
a technique to identify problem domain objects by finding and classifying the nouns in a dialog or description

 

Term
Attributes
Definition
descriptive pieces of information about things or objects
Term
Identifier/Key
Definition
an attribute the value of which uniquely identifies an individual thing or object
Term
Compound attribute
Definition
an attribute that consists of multiple pieces of information but its best treated in the aggregate
Term
Association
Definition
a term in UML that describes a naturally occurring relationship between specific things sometimes called relationship
Term
Relationship
Definition
term that describes a naturally occurring association between specific things sometimes called an association
Term
Cardinality
Definition
a measure of the number of links between one object and another object in a relationship
Term
Multiplicity
Definition
a measure in UML of the number of links between one object and another object in an association
Term
Multiplicity constraints
Definition
the actual numeric count of the constraints on objects allowed in an association
Term
Binary associations
Definition
associations between exactly two distinct types of things
Term
Unary association
Definition
an association between two instances of the same type of thing
Term
Ternary association
Definition
an association between exactly three distinct types of things
Term
N-ary association
Definition
and association between n distinct types of things
Term
Data entities
Definition
the term used in an ER diagram to describe sets of things or individual things
Term
Entity Relationship diagram(ERD)
Definition
A diagram consisting of data entities (ie sets of things) and their relationships
Term
Semantic Net
Definition
A graphical representation of an individual data entity and its relationship with other individual data entities
Term
Class
Definition
A category or classification of a set of objects or things
Term
Domain Class
Definition
Classes that describes objects from the problem domain
Term
Class Diagram
Definition
A diagram consisting of classes (ie sets of objects) and associations among the classes
Term
Domain models class diagram
Definition
a class diagram that only includes classes from the problem domain
Term
Camelback notation
Definition
or camelcase notation when words are concatenated to form a single word and the first letter of each embedded work is capitalized
Term
Association class
Definition
an association that is also treated as a class: often required in order to capture attributes for the association
Term
Generalization/ specialization relationship
Definition
a type of hierarchical relationship in which subordinate classes are subsets of objects of the superior classes and inheritance hierarchy
Term
Superclass
Definition
the superior or more general class in a generalization/specialization relationship
Term
Subclass
Definition
the subordinate or more specialized class in a generalization/specialization relationship
Term
inheritance
Definition
the concept that specialization classes inherit the attributes of the generalization class
Term
Abstract class
Definition
A class that describes a category or set of objects but that never includes individual objects or instances
Term
Concrete Class
Definition
A class that allows individual objects or instances to exist
Term
Whole-Part relationship
Definition
a relationship between classes in which one class is a part or a component portion of another class
Term
Aggregation
Definition
A type of whole-part relationship in which the component parts also exist as individual objects apart from the aggregate
Term
Composition
Definition
A type of whole-part relationship in which the component parts cannot exist as individual objects apart from the total composition
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