STUDY OF RATIONAL ROSE CONCEPTS AND TERMINOLOGY - OOAD LAB

Aim To study the concept and terminologies used in rational rose. Visual Modeling In the world today,we have to business process and computer systems. Asthere is a rapid changes in software development processes, software professionals have challenges in handling those changes. That is why modeling comes in,modeling involves capturing the important real world things and mapping these things to computer system's method that is used to show this mapping is called visual mapping. Modelingcreates a blue print for the system we want to built using a standard languages that is understood by all. This languages is the UML(Unified Modeling Language). Unified Modeling Language        The UML is the standard language for visualizing,specifying,constructing and documenting the artifacts of the software system.UML can be used for support your entire life cycle.     See the interaction with the outside world in the use case diagram     Visualize object interaction in sequence and collaboration diagram     Look at the structure of your system by examining class diagram     View the system architecture by looking at the defined package     Explore the physical nature of the system using component diagram  UML diagram UML has set of notations, conventions and diagrams to describe and model an application. There are 8 UML diagrams, Ø  Use case diagram Ø  Activity diagram Ø  Sequence diagram Ø  Collaboration diagram Ø  Class diagram Ø  Component diagram Ø  Deployment diagram Ø  State chart diagram Use case diagram A use case diagram is created to visualize the interaction of your system with outside world.It is a visual representation,what the customer wants to do.It represents a major piece of functionality that is computer from beginning to end. Elements Ø  Use case Ø  Actor Ø  Relationship Use case A use case is a sequence of action performed by asystem to yield a measurable value for an actor. An actor is someone or something outside the system that interacts with thesystem. A relationship diagram shows the flow of events within our system. The workflow often consists of a basic flow and one or more alternate flows. Activity Diagram             An activity diagram is a variation of state machine diagram in which the states are activities representing the performance of operations and the transitions are triggered by the completion of the operation. Elements Activity – It represents the performance of a task during the work flow. Start state – It shows the beginning of the activity diagram. End state- It represents a final or terminal state on a activity diagram. Static transition - A state transition shows what activity flows after another. Decision - A decision is a point in an activity diagram where guard conditions are used to indicate different possible transactions. Synchronization bars – It allows you to show concurrent thread in a work flow of a use case. Sequence diagram A sequence diagram shows step by step what must happen to accomplish a piece of functionality provided by the system. Elements Ø  Actor Ø  Objects Ø  Messages Ø  Life line Ø  Focus of control    Actor:  An actor is someone or something outside the system that interacts with the system either by giving or receiving information or both. Objects:  An object is an instance of a class. Messages:  A message is a communication between two objects that trigger an event Life Lines:  A life line represents aexistence of the object at the particular time. Focus of control:  It shows a period of time during which an object is performing an action either directly or through a subordinate procedure. Collaboration diagram A collaboration diagram displays objects and their links to one another. Elements Ø   Actor Ø   Objects Ø   Links Ø   Messages Actors:  An actor is someone or something outside the system that interacts with the system either by giving or receiving information or both. Objects:  An object is an instance of a class. Links:  A link is the pathway for communication between the collaboration diagram. Messages:  A message is a communication between two objects that trigger an event. Class diagram Class is aset of objects that shares the same attributes,operations,relationship and semantics. Association An association is the most general relationship and indicates the relationship between classes. Generalization A generalization is a parent child relationship where one class shares the structure and of more classes. Multiplicity It is the number of instance of another class Eg:     0......n,1.......n, 0........1 Association name An association name is the labeled that classifies the meaning of the association. Role name A role name is the label that is specifiedat the end of the association. Rational Rose interface The Rational rose interface includes the following     Browser     Diagram window     Diagram toolbar     Documentation window      log window  The Browser  The browser allows you to textually view and navigate the views and diagrams in Rational Rose. Diagram window The diagram window allows you to create and update graphical views of the current model . Diagram Toolbar The diagram toolbar is includes the element to build a diagram .Each diagram Toolbar is unique to that diagram. It will be active only when the diagram is displayed. Documentation window It is used to create view or modify text that explains a selected item within a diagram. Log window Log window reports progresses, result and errors. Result Thus the concept and terminologies of Rational Rose were studied.

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