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Private is a method or an attribute that can only be invoked by
that class where that method or attribute belongs. It is
symbolized by “-“.
b.
Protected
Protected is a method or an attribute that can only be accessed
by classes that inherit class where that attribute or method
belongs. It is donated by “#”.
c.
Public
Public is a method or an attribute that can be invoked by other
class. It is symbolized by “+”.
7.
Dependency
Dependency is an operation relationship between one particular
class and another class which one of them depends on the others.
Dependency is donated by a dashed arrow line.
8.
Generalization
It is a class hierarchy that let us group the shared attributes and
operations into top-level class (superclass), and then to define one or
more lower-level classes with extra or different attributes and
operations.
2.2.1.3.
Sequence Diagram
According to Whitten and Bentley
(2007), sequence diagram
graphically depicts how an object interacts with each other by sending
and receiving message in execution use case or operation. A sequence
diagram can be seen as a way to integrate the steps of a use case with
the object s of a class diagram. Sequence diagram generally consists of:
1.
Actor
Sequence diagram actor is one of main actors in use case diagram. It
is shown with use case actor symbol.
2.
System
The whole system is interpreted by using a box. In order to indicate
a running “instance”, sequence diagram uses colon (:) at the
beginning of system.
3.
Lifelines
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