Systems Design

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4. Questions - Got a question about Systems Design then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....

5. Reputation - Never heard of the company selling Systems Design? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Systems Design and build up a picture of their reputation for sales, returns, customer service, delivery etc.

6. Returns - still worried that even after all of the above your Systems Design wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Systems Design then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Systems Design site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Systems Design, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Systems Design, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.

In computing Systems design is the process or art of defining the computer hardware and software architecture, components, modules, interfaces, and data for a computer system to satisfy specified requirements. One could see it as the application of systems theory to computing. Some overlap with the discipline of systems analysis appears inevitable. However, computing systems are only one category of systems that can be designed: see also System and design. Overview Systems design is the process of defining and developing the computer systems to satisfy specified requirements. Until the 1990s systems design had a crucial and respected role in the data processing industry. In the 1990s standardization of hardware and software resulted in the ability to build Modularity (programming) systems. The increasing importance of software running on generic platforms has enhanced the discipline of software engineering at the expense of systems design.

Object-oriented analysis and design methods are becoming the most widely used methods for system design. The Unified Modeling Language has become the standard language used in Object-oriented analysis and design. It is widely used for modeling software systems and is increasingly used for designing non-software systems and organizations.

System designers are in between business analysts and technical experts.

Systems design: Topics

Analysis — free from any cost or unrealistic constraints, this stage lets minds run wild as 'wonder systems' can be thought-up, though all must incorporate everything asked for by the management in the Terms Of Reference section;

Architectural design - creates a blueprint for the design with the necessary specifications for the hardware, software, people and data resources

Design — designers will produce one or more 'models' of what they see a system eventually looking like, with ideas from the analysis section either used or discarded. A document will be produced with a description of the system, but nothing is specific — they might say 'touchscreen' or 'GUI operating system', but not mention any specific brands;

Computer programming and debugging - creates and programs the final system

Fact Finding and Recording — how is the current system used? Often questionnaires are used here, but also just monitoring (watching) the staff to see how they work is better, as people will often be reluctant to be entirely honest through embarrassment about the parts of the existing system they have trouble with and find difficult if merely asked;

Feasibility Study — asks whether the managements' concept of their desired new system is actually an achievable, realistic goal, in-terms of money, time and end result difference to the original system. Often, it may be decided to simply update an existing system, rather than to completely replace one;

Implementation and Review — set-up and install the new system (including writing any custom (bespoke) code required), train staff to use it and then monitor how it operates for initial problems, and then regularly maintain thereafter. During this stage, any old system that was in-use will usually be discarded once the new one has proved it is reliable and as usable.

Requirements analysis - analyzes the information needs of the end users

Software concept - identifies and defines a need for the new system

System Specification — having generically decided on which software packages to use and hardware to incorporate, you now have to be very specific, choosing exact models, brands and suppliers for each software application and hardware device;

System testing - evaluates the system's actual functionality in relation to expected or intended functionality.

Terms of reference — the management will decide what capabilities and objectives they wish the new system to incorporate;

Use - obviously the system needs to actually be used by somebody, otherwise the above process would be completely useless.