CONCEPT OF SYSTEM DESIGN

CONCEPT OF SYSTEM DESIGN: 

CONCEPT OF SYSTEM DESIGN

INTRODUCTION: 

INTRODUCTION System analysis describes what a system should do to meet the information needs of users. System design specifies how the system will accomplish this objective. System design consists of design activities that produce system specifications satisfying the functional requirements developed in the systems analysis stage.

ELEMENTS: 

ELEMENTS SYSTEM DESIGN

USER INTERFACE DESIGN: 

USER INTERFACE DESIGN Focuses on deigning the interactions between end users and computer systems. Designers concentrate on - input/ output methods and - the conversion of data and information between human-readable and machine-readable forms. This is a proto typing process where working models or prototypes of user interface methods are designed and modified with feedback from the end users.

Data design: 

Data design Focuses on -the design of the structure of databases and -files to be used by a proposed information system. Data design frequently produces a data dictionary, which catalogs detailed descriptions of: The attributes of the entities about which the proposed information system needs to maintain information. The relationships these entities have with each other. The specific data elements(databases, files, record, etc..) that need to be maintained for each activity. The integrity rules that govern how each data element is specified and used in the information system.

PROCESS DESIGN: 

PROCESS DESIGN Focuses on the development of software resources, (the programs, procedures) needed by the proposed information system. Process design produces detailed program specifications and procedures needed to meet -the user interface and data design specifications that are developed. -meet the functional control and performance requirements developed in the analysis stage.

SYSTEM SPECIFICATIONS : 

SYSTEM SPECIFICATIONS Final design must specify what types of hardware resources, network resources, and people resources will be needed. It must specify how such resources will convert data resources into information products. These specifications are the final product of the systems design stage called system specifications.

Characteristics to be included in system specifications: 

Characteristics to be included in system specifications User interface specifications - Content, format, sequence of user interface products and methods. Database specifications - Content, structure, distribution, maintenance, retention of databases. Software specifications - The required software package of the proposed system Hardware specifications - The physical and performance characteristics of the equipments and networks. Personnel specifications - Job descriptions of persons who will operate the system.

THANK YOU!!!!: 

THANK YOU!!!!