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Online ordering and inventory system

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par Jean Claude KANYESHYAMBA
INILAK - Bachelor's degree 2012
  

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4.3 User Requirements Specifications

The software requirements document is a written statement of what the software will do. What the software does is directly supposed by its users- either human user or other software systems. When an external system submits a request of a certain form, it gets a particular response. The main purpose of requirements document is to serve as an agreement between the developers and the users on what the application will do.

4.4 System Analysis

Any system designer will first analyze the existing system to point out the problems which are the system requirements creating need for a new one. The system analysis in this study has been catered for in the research phase during which the designer looked at how the existing operates and its shortcomings. Here the target is to come up with an OOIS which would facilitate the customers and then display the information about product needed for customer and to users using appropriate programming languages and web server in this case Easy PHP, HTML and Apache service respectively, here we will use merise method.

Merise method: is a method that is used to develop and to realize information technology. The principal objective of this method is the realization of information system. This method helps in data analysis and in data division in order to facilitate their handling.

4.5 System design

4.5.1 Design and development of the system

The design of a system uses the functional specification as source and produces the details that condition how system will assemble the requirement identified during system analysis. The design process should take care of the following:

· Recording product

· Apply for customer

· Ordering product

· Delivery product

· Check product

· Reporting

The detailed design of input, output, files, database, test plan and other tasks are intended to be executed; data capture forms must be designed, clerical procedures laid down and all aspects of the design must be documented.

4.5.2 Functional Diagram

Function diagram is used to show system's functions that will be constructed and the implementation process of data diagram. In addition, function diagram will also be used to determine the appearance of smaller process in that flow chart. Function diagram show to do not, how do. In functional diagram, a function is divided into many smaller functions and each smaller function contains many even smaller ones. Constructing diagram is a process of division, from a higher function to appropriate smaller functions. Diagram need to be presented clearly, simply, exactly, fully and balanced function of the same level has the same level of difficulty need to be on the same page. In the current system, the function hierarchy diagram is as follows:

Online ordering and inventory system

Order

Management

Report

Product

Management

Customer

Management

List of customer

List of product

Recording order

List of order

Registration of new customer

Registration

Update

Deliver product

Balance of stock

Update

VAT

List of sales

Search customer

Search product

Figure 1: Function Diagram

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