Definitions

• Data flow diagram
• A two dimensional diagram that explains how data is processed and transferred in a system. The graphic identifies each source od data and how it interacts with other data source to reach a common output
• Data models
• It is the formalisation and documentation of existing processes and events that occur during application software design and development. Data modelling techniques and tools capture and translate complex system design into easily understood representations of the data flows and processes.
• Modular programming
• It is the formalisation and documentation of existing processes and events that occur during application software design and development. Data modelling technique and tools capture and translate complex system design into easily understood representations of the data flows and processes.
• Structured programming
• It is the process of subdividing a computer program into separate sub-programs,
• Structured system design
• It is a set of standard for application design. It uses a formal methodical approach to the analysis and design information system.