first information systems began to appear in the 50s of the last century.Their task was processing invoices and payroll, which reduced the time required for preparation of documents.
In the 70s and 80s are a means of information systems management control, which supports and helps to make quick decisions.
In the late 80s, they start to be used in organizations of any type, to help achieve success in activities, the creation of new products and services.
Information System is considered to be a certain number of related software automation, storage and processing of information.The data received by the information system are stored there or processed and transmitted to the consumer.
Technical Information System project - a project document, which describes the design solutions for the creation and operation of information systems.Elements and systems of the IS function are objects of design.
Technical project are beginning to prepare to conduct pre-survey and give justification whether to create the system.Lists the requirements for the system functions and design methods.
Next technical project passes the second stage - a research project, the development of different versions of the system and choose the best of them.
third stage - the terms of reference.This is a document sent to the customer for the executor, it describes how to specify which functions should be performed by the system and the requirements for it.Developed according to GOST 34.602 - 89.
When technical project takes fifth stage, being the main work on the creation of IP.Organizational support - introduced changes in the management structure (merge or split units).
Information support - choose a system of classification coding.Develop documents, an action plan to prepare the asset for the implementation of systems, calculated the expected economic effect.
sixth stage: programming is carried out.In accordance with the job descriptions developed by the technical instructions.
Seventh step: Testing IP and the absence of defects is commissioned.
Finally, on the eighth stage of the technical design of IC is accompanied by the Executive, in order to maintain performance at the proper level.Consultations, to overcome the disadvantages, making suggestions for the development of IP.
concept of the automated information system involves the use of computer support for the design of systems and called CASE.There are basic principles of IP-based CASE-technologies:
- comprehensive computer support design;
- model approach CASE: The system can support an object-oriented or function-oriented approach;
- hierarchical view of the model.Drill (decomposition), respectively, with top-down design;
- principle of visibility - illustrations, graphics, describes the structure and elements of the system.
