• Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

Analysis Tools

Extracts from this document...

Introduction

Analysis tools There are a range of tools and techniques that can be used during the analysis stage of the system life cycle. The process of analysis only begins when the feasibility report has been developed and has been approved by the personnel within the organization. Analysis involves analysing the current system, and afterwards stating a number of solutions for the new system. Analytical Tools The following section describes the list of tools used within the analysis stage, along with an explanation of why it should or should not be used within the Perfect Pie scenario. Feasibility Study A feasibility study will allow the analyst to establish whether or not a proposal for the current system is worthwhile or feasible, this also allows the analyst reviewing the system, to highlight properties within computerization. Although a feasibility study will not instantly solve the problem, but it will allow a user to establish whether or not a proposed improved will be acceptable to the design of the new system. A feasibility report should consist of the following sections terms of reference, applications consider for three computerizations, system investigations, envisaged system requirements and lastly costs of implementation. A feasibility report should also include a brief description of the business and any problems with the existing system, details of the sections within the business that are going to be looked at, objectives of the proposed system, alternate solutions considered and why they were rejected, social/economic/technical factors, for example do staff need training and is the required technology available? If all these suggestions are taken into consideration, the feasibility should end with a decision on whether or not to proceed with the proposed design of the new system. ...read more.

Middle

For example other decision tables can use true or false, number alternatives, fuzzy logic or probabilistic representations. Although action entries can represent whether an action is to be performed, or in more advanced decision tables, the sequencing of actions to perform. A Decision table can be used if a combination of conditions is given. In decision table conditions are known as causes and seminal numbers of conditions are known as business rule. The following is a list of advantages associated with decision tables: 1. Decision tables are very easy to understand, for example, they can map nicely together to create a set of business rules. 2. Decision tables can be applied to real problems, for example analysis of the current system used within an organization. 3. Through use of a decision table, no prior assumptions can be made about/from the data, leaving other methods available or open for discussion. 4. Decision tables allow users to input and process both numerical and categorical data. The following is a list of disadvantages associated with decision tables: 1. In order for a decision table to be of any value as an analysis tool, all outputs within the decision table must be categorical. 2. Not only must the output be categorical but there can only be one limited output. 3. Creating a decision table from numeric datasets can be a complex operation. Perfect Pie and Decision Tables The Decision Table as an analysis tool within the Perfect Pie Scenario would not be suitable, since it would be non-beneficial. Although Decision Tables are very easy to understand, if one output in the decision was not categorical, it would be of value to the analysis of the current system, making the current process a waste of time. ...read more.

Conclusion

Problem definitions will always include a 'terms of reference' so the analyst can easily refer back to it for clarification. All problem definitions must include what the proposed system must achieve, different objectives should be taken on board, for example, the reduction of running costs, improved customer service (customer satisfaction at 100%) and lastly better mgt information, this will drastically improve decision making processes. The proposed system will come with restraints also, for example, the money available for the design of the new system (budget), and areas that mightn't need any improvements. All reports about the problem definition need to be documented, and clearly listed, for example, reports need by the administration staff, with any other outputs required. All problems with current system must be listed. The following states the advantages of Problem Definitions: 1. Both user and analyst are thinking of a solution for problems within the proposed system. 2. All problem definitions include 'terms of reference' which can be easily looked back on. The following states the disadvantages of Problem Definitions: 1. The process is very time consuming and the organizations budget could be decreased because of this i.e. financial risk. Perfect Pie and Problem Definition Problem Definition can be used as an analysis tool within the Perfect Pie Company. Although there are financial risks involved with the process, which may prove risky for the Perfect Pie Company, it is still a good analysis tool because both user and analyst can sit down together and draw up solutions for problems within the current/proposed system. Conclusion From looking at the various Analysis tools on offer, the most appropriate methods for the new system for Perfect Pie are Problem Definition, ERD, Data Flow Diagrams and Flowcharts. ?? ?? ?? ?? 1 ...read more.

The above preview is unformatted text

This student written piece of work is one of many that can be found in our AS and A Level Information Systems and Communication section.

Found what you're looking for?

  • Start learning 29% faster today
  • 150,000+ documents available
  • Just £6.99 a month

Not the one? Search for your essay title...
  • Join over 1.2 million students every month
  • Accelerate your learning by 29%
  • Unlimited access from just £6.99 per month

See related essaysSee related essays

Related AS and A Level Information Systems and Communication essays

  1. Marked by a teacher

    Database Coursework on a Vehicle Rental System: Analysis

    5 star(s)

    to use the system effectively and the cost of installing the system. There are other costs too, but these are more detrimental to the individual and society in general rather than the business itself. This includes workers being made redundant, deskilling, negative environmental effects and the loss of job satisfaction for certain employees.

  2. Marked by a teacher

    Assignment A: Analysis of Transactional Website

    3 star(s)

    should be taken into consideration when building a website because it could be the difference between making lots of sales and hardly any sales. Offering Deals (Sales) is one of the methods that Bestbuys uses to entice their customer. By offering deals customers are more likely to buy from the

  1. Marked by a teacher

    Ecommerce Case Study

    In order to have E-Commerce it is essential that Cuckoo Games established a payment system for online orders. This will be a large part of integrating your business to the internet. The most popular payment system is PayPal. PayPal is used because it stores and safeguards your card and bank

  2. Threats to Data

    Personal information must be: 1. Fairly and lawfully processed. For the processing of personal data to be fair, transactional site must collect their information directly from customers and always ensure that these individuals are aware of any other information needed to ensure fairness, taking into account the specific circumstances of the processing.

  1. Database Analysis & Design

    both program and create a database as well as use one Disadvantages The disadvantages of a Hierarchical database are, * Very rigid strict structure, a new table is needed if a new field is needed. This means changing the database to add one simple field, this is a lot of work.

  2. Implementing a new system for Mastercare.

    Here is a detailed time plan for the design stage and the sections that I will complete when designing the system. 1.3.9 Training The computer skills of the users of the system are adequate enough to utilize the system without the need of any training other than being shown how

  1. Organisational Structure

    Also there isn't that much chance of promotion because the company is small so they will have employees leaving to find a better job. How these might affect the company in meeting its aims and objectives: In Castell there is direct communication between the directors and the employees.

  2. Review articles that take a complex approach to new organisational structures and proposed several ...

    Also, "complex problems need a complex analysis" (Davenport, Prusak - 1997). Indeed, "the central task of a natural science is to show that complexity, correctly viewed, is only a mask for simplicity" (Anderson - 1999). As Cohen and Stewart (1994)

  • Over 160,000 pieces
    of student written work
  • Annotated by
    experienced teachers
  • Ideas and feedback to
    improve your own work