Define what a data modeling is and explain what type of adva

Define what a data modeling is and explain what type of advantage we can gain through the data modeling. In addition, you should talk about the data modeling tools at least two tools. ( It should be 300 to 400 words)

Solution

In simple terms data modelling can be defined as the redocumentation of existing system that is more complex to design and which is not easily understood as an system that is fully and easily understood. The system is represented in terms of symbols , texts etc..which helps in easy understanding of the requirements of the system. This graphical representation can be used as a blueprint for the construction of new software or for reengineering process.In case of software engineering processes these data models are designed in the analysis and design phase in order to fully understand the requirement of the system being designed. We can think datamodel as a flowchart that represents the flow of data represented by arrows.

The biggest advantage that we can gain from datamodelling is that we are representing the system in terms of symbols charts, flow diagrams that can best explain the requirements of the system and can help in fully understanding the system requirements.As best said \"one picture speaks thousand words\".

Entity relationship data modelling tool and workdraw and sql workbench are best tools that can be used.