Date: January 23, 2015 Author: fangfang
At the stage of investigation, research and preparation, a Website construction Development team. The work of this stage is mainly for website system users, including user needs, business processes, processing methods, relevant data and information content, etc. Through investigation and research, relevant organizations, website system functions and specific business processing processes and methods can be understood and clarified in detail Establish website The logical model of the system and the subsequent website design and development work lay the foundation.
1. Purpose and content of the survey
The purpose of user survey is to fully grasp the current situation of the current system, find out its implementation process, find problems and weak links, collect data, and prepare for the next systematic analysis and propose the logical design of the new system. The user survey should follow the principle of user participation, that is, the business personnel and supervisors of the user department and the system analysts and system designers of the design department should work together to find out more deeply the problems existing in the object system, find solutions, and clarify the functions that the new system needs to achieve. Specific investigation contents include:
(1) Natural condition investigation. Including the investigation of organization and functional system.
(2) Functional requirements survey. It is an important basis for building a new system to know what functions users need the new system to have.
(3) Investigation of performance requirements. The performance of the system can have multiple indicators, which should be determined according to the user's application environment, specifically including correctness, robustness, processing capacity and speed, confidentiality and security.
(4) Survey of constraints and problems. Observe the deep details of the current system, analyze its causes, consequences and solutions.
(5) System boundary survey. The boundary of a system is the boundary between the system itself and the system environment. Accurate delimitation of this boundary can clarify the function of the system and the information connection between the system and the environment.
2. Research methods
The detailed investigation of the current system is a complicated and arduous task, which may need to be carried out many times. In order to receive the expected investigation results, relevant methods should be used and certain essentials and techniques should be mastered. Common survey methods include:
(1) Collect data. Collect the formats or samples of department information, plans, original vouchers, documents and statements used in daily business, and conduct classification research on them.
(2) Hold a survey meeting. This is a centralized investigation method, which is suitable for understanding the macro situation and business convergence.
(3) Written investigation. The questions to be investigated shall be designed into a questionnaire, which shall be sent to the respondents to fill in, and the problems with common characteristics can be investigated in a large range.
(4) Interviews. The investigation of special problems and individual details requires special interviews with relevant business personnel to understand the details of each step and method.
(5) Participate in business practice. The data obtained by the above methods are indirect, which is easy to cause vague understanding of system analysts. When necessary, developers should participate in business practices to obtain first-hand data.
3. Chart tools commonly used in survey and research
Using some appropriate charts in the detailed survey can more clearly express the results of the survey and facilitate analysis and communication. Common chart tools include:
(1) Organization chart. (2) Functional system diagram. (3) Business process diagram. (4) Data flow chart. (5) Data statistics table.
The tools described above may be used in the detailed survey of the current system, mainly to analyze according to the survey results. However, when drawing, we need to discuss with users, solicit users' opinions, modify them, and finally reach a consensus. In practical application, according to different information systems, some important tools can be selected for analysis, but not all of them must be used.
