Which data modelling methodologies are the most effective, and why do you believe it is important to make use of them when the analysis phase is being carried out? How do we go about selecting the data points that will be used in the process of modelling?

You work as an information technology consultant, and you have been tasked with developing a new system for a modest real estate brokerage firm. All of your previous experience has been gained through traditional data and process modeling methodologies. This time, you decide to use an object-oriented approach to solving the problem. What method will you use to get started? What are the differences between these tasks and typical structured analysis?

Which data modeling techniques are most helpful and why are they important during the analysis phase? How do we determine which data points we need to model?

What are the four various E-R diagram types that are produced during conceptual data modelling, and why are they studied?