INFORMATION SYSTEMS MODELLING AND DESIGN

Information schemes Modeling and Design

INFORMATION SYSTEMS MODELING AND DESIGN

Introduction

The Enterprise Architect type of Microsoft Visual Studio .NET 2003 includes a exact replicate of Microsoft Visio for Enterprise Architects (VEA). For those of you new to the merchandise, Microsoft Visio is a drawing bundle that permits you to choose predrawn forms from stencils to draw and conceive distinct kind of design drawings such as flowcharts, mesh design drawings, and software design drawings.

Software submission developers can form the submission's conceive and functionality with Visio and Unified form dialect (UML) 2.0 through Visio's UML form design drawing template. Also, Visio can present turn around technology on an implemented system and change existing cipher into a UML model.

This two-part article sequence interprets how to form different UML design drawings with Visio and how to transform these design drawings into code in a .NET programming dialect, therefore decreasing the work essential to apply the modeled answer from scratch.

In this first item, I start with a brief overview of some UML diagrams and analyze their location in the development cycle. Ianalyze how to conceive a university scheme utilising UML diagrams. The scheme will allow scholars to enroll in seminars and take courses. Courses are educated by exact professors. The scheme will also shop both scholars' and lecturers' addresses. This article wrappings the development of the static design drawings for the university system. (Muthén, 1984)

Organizing the things in the design drawing Using Layers

When you work with large-scale UML design drawings, it can be very helpful to use levels to recognise different localities in the design drawing and accredit which things in the form belong to which layer. Layers are utilised to coordinate related things on a diagram. By assigning forms to distinct levels, you can selectively view, publish, hue, and secure different classes of shapes. In the university scheme example in this item, for example, it might be useful to characterise things in the conceptual form in two layers:

Grades layer: Contains categories with grade-related information

Personal level: comprises scholars' individual information Doing this permits me to work with the grade-related objects in the diagram without having the individual information-related things interfering.

In Visio, you conceive layers by going to the menu bar and selecting Format --> Layer . If no layers have been defined, a punctual will ask for the title of a new layer. If levels are already defined in the form, then you can conceive, edit, or delete levels by going to the list bar and clicking outlook --> Layer Properties . In this window, you can also identify if a layer is or is not visible. Hiding portions of the form can be helpful to clear the drawing locality and provide more space to work, or when you are distributing the design drawing with somebody who is engaged in a just a piece of the form and does not need to glimpse the whole thing.

Each layer is recognised by a title and a ...