Uml Usage And Standardizing Its Guidelines

“During the object-oriented analysis (OOA) phase object-modeling techniques are used to analyze the functional requirements for a system and create models which reflect the logical design of the system. During the object-oriented design (OOD) phase of the system, models are elaborated upon to include implementation specific details that show how the physical design of the system will come together. OOA focuses on what the system does (its static structure and behavior), OOD on how the system does it (its run-time implementation).”

A profile allows UML to be extended for use with a particular programming platform or to model systems intended for use in a particular domain. A profile extends the UML to allow user-defined stereotypes, meta-attributes, and constraints.

In the object-oriented modelling class diagrams are very important. In data modelling techniques class diagrams are used. These class diagrams are represented by using the box symbol.

* Imagine that you have been working on a project to design and build a given system. You have completed the elicitation and evaluation phases and now you need to specify and document the system-to-be. Suppose you have decided to use diagrammatic notations for the specification and documentation. Your options are to use context diagrams or frame diagrams. Evaluate each type of diagram and select the one you feel is the best fit. Provide a rationale.

Use Case Diagram is one of the models of UML Language that is used to analyze, construct, design, and document the artefacts of Software Systems.

The above figure shows the UML diagram; our project contains six major classes namely Node, FaultInjector, PingMap, MonitorAgent, LearningAgent and MachineLearningBlock. The MachineLearningBlock class is sub-class to the LearningAgent class. This handles all the functions from injecting faults, requesting for the TCP statistics, and analysis by the machine learning block.

The focus of object-oriented view is on the elaboration of design classes that belong to both problem and infrastructure domains. Classes are elaborated by specifying messaging details, identifying interfaces, defining attribute data structures, and describing process flow for operations. In traditional view, three components are refined, they are control modules, domain modules, and infrastructure modules. To generate programming language source code detailed representations of data structures, interfaces and algorithms for each program are to be created.

The Survey results states respondents involving in an average of 27 projects about 6.2 using UML over an average 15 year career in information technology. Half of the UML projects are not use-case driven. Class Diagrams re most used component. Developers believe that UML diagrams can be understood by clients. Most of the system analysts and programmers use class and sequence diagrams and use-case narratives.

b) Define Object modeling – It is defined as the properties of an object in some computer programming language or technology that uses them. Specific words of the programs can be examined by this.

The basic idea of this model is to transfer the development efforts from programming to the higher level of abstraction,through use models such as primary artifacts and by transforming models into source code or other artifacts .

UML consists of several diagrams which are used in developing the project or software. Among those 6 diagrams are used frequently to develop the software. Use case diagram is the representation of the interaction between the customer or the user with the system or product. Class diagram shows the architecture of the software by determining the classes used in the system. Activity diagrams are the pictorial notation of the steps which are followed in developing the system. Collaboration diagram shows the interaction between the objects and classes of the system. Sequence diagram defines the steps involved in the project and in which order they should occur. State chart diagrams are typically used to define the properties of the software. Object diagram is alike to the class diagram, which concentrates on the attributes and classes of the product. Component diagram shows how small chunks of components are combined unitedly to form a bigger component of the product. Deployment diagram depicts how the system should deploy and where the deployment should be done.

Many programming languages, office information systems, system simulation and artificial intelligence have adopted object-oriented technology. It is an assumption that learning specific development method or a set of tools.

In this project a descriptinve UML modelling for an elevator control system is depicted. Elevator system can be considered as an real time embedded system and hence the object oriented concepts of UML can be exploited. Although the current object-oriented analysis and design methods focus only on the software of a system which might be troublesome for a real time system merely because of more comprehensive and intellegent approach that it requires. Some of the real time aspects that needs to be considered are :

The Unified Software Development Process is a popular iterative and incremental software development process framework.

Object-oriented programming (OOP) and object-oriented design (OOD) refer to a particular way of organizing programs, one which is rapidly emerging as the preferred approach for building complex software systems (Morelli, R, 2000 pg. 5). Sommerville (2001) gave the following definitions: