Billing system Essay

The Information Flow Model (IFM) is used to understand the firsts and destination of breeding flow, which is required to execute the business process as shown in Figure 3.5.In IFM, learning or data generators and processors are brought unitedly to explain the flow. This could be documents, e-mail, or voicemail. The contents of the flow could be text, images, or diagrams. The purpose of the flow is to take the process further to its logical conclusion. For example, a customer order is to be processed for delivery or to be rejected, and necessary data or nurture input has to be provided progressively in the process.IFM is generally a high-level model showing main(prenominal) flows, internal flows of reading from sources, such as product catalogs, and manufacturing schedules. Customer profiles and accountancy information are not shown. These are presumed to be present.In an information flow model, each bear upon stage is described as wizard of the following stage classes1. D ata Supply where data suppliers forward information into the system.2. Data Acquisition the stage that accepts data from external suppliers and injects it into the system.3. Data knowledgeableness internal to the system, data may be generated and then forwarded to another processing stage.4. Data Processing any stage that accepts input and generates output (as thoroughly as generating side effects).5. Data Packaging any point at which information is collated, aggregated and summarized for reporting purposes.6. Decision Making the point where charitable interaction is required.7. Decision Implementation the stage where the decision made at a decision-making stage is executed, which may affect other processing stages or a data delivery stage.8. Data Delivery the point where incase information is delivered to a known data consumer.9. Data Consumption as the data consumer is the ultimate user of processed information, the consumption stage is the eliminate stage of the sys tem.Data moves between stages by means of directed information carry pipelines indicating the flow of information from one processing stage to another and the pleader in which data flows. An information flow model is represented by the combination of the processing stages connected by directed information channels. at once the flow model has been constructed, names are assigned to each of the stages and channels. An information flow model can be used to identify the source of a data woodland problem. The effects of a data tonus problem might manifest themselves at different stages within an information flow, perhaps at different data consumption stages.However, what may reckon to be multiple problems may all be related to a single point of failure that takes place earlier in the processing. By identifying a set of data-quality expectations and creating validation rules that can be imposed at the entry and exit of each processing stage, we can trace through the information fl ow model to the stage at which the data quality problem occurred. Fixing the problem at the source will see a beneficial effect across the board, as all sequent manifestations should be eliminated