Author Archives: jamilambarak

The figure bellow is a sequence diagram for online bus booking information system The figure below is a sequence diagram for online bus booking information system passenger side. The figure below demonstrate an online ordering information system admin side The figure below is a demonstration of online order information system customer side.

A sequence diagram shows elements as they interact over time, showing an interaction or interaction instance. Sequence diagrams are organized along two axes: the horizontal axis shows the elements that are involved in the interaction, and the vertical axis represents time proceeding down the page. The elements on the horizontal axis may appear in anyContinue reading “SEQUENCE DIAGRAMS”

Based on the cases of online bus booking information system and online order information system, the figure below demonstrate the class diagram on online bus booking information system. The figure below demonstrate an online order information system

CLASS RELATIONSHIPS A class may be involved in one or more relationships with other classes. A relationship can be one of the following types: Inheritance (Generalization): Represents an “is-a” relationship. An abstract class name is shown in italics. SubClass1 and SubClass2 are specializations of SuperClass. Generalization. The relationship is displayed as a solid line withContinue reading “Continuation on Class diagram (part 1)”

Class diagram is UML structure diagram which shows structure of the designed system at the level of classes and interfaces, shows their features, constraints and relationships A class is a classifier which describes a set of objects that share the same features constraints semantics (meaning). Class Diagrams: UML class diagrams model static class relationships thatContinue reading “CLASS DIAGRAMS”

Lets now learn on how to draw activity diagram based on the cases from the use case diagrams. This diagram is for online order information system on customer side. This diagram is for online order information system on Admin/manager side. This diagram is for online booking information system passenger side. This diagram is for onlineContinue reading “Case studies on Activity diagram (part 2)”

ACTION STATE\ ACTIVITY STATE As elements communicate with one another within a society of objects, each element has the responsibility of appropriately reacting to the communications it receives. An action state represents processing as an element fulfills a responsibility. There are various types of action states, including simple, initial, and final action states.   Simple ActionContinue reading “Continuation on Activity diagram (part 1)”

Activity diagrams, depict the activities and responsibilities of elements that make up a system. Activity modeling is a specialized type of behavioral modeling concerned with modeling the activities and responsibilities of elements. Activity diagram is basically a flow chart to represent the flow from one activity to another activity. The activity can be described asContinue reading “ACTIVITY DIAGRAM”

Use case diagram for an order information system Use case diagram for an online bus booking information system.

ACTORS An actor is a user or external system with which a system being modeled interacts. For example an E commerce system involves various types of users including: Customers, Database administrator, user-interface manager and system administrator These users are all actors. An actor is external to a system, interacts with the system, may be aContinue reading “Continuation on Use case diagrams (part 2)”