4. According to Figure 1, write the database development activities that would map to the prototyping phases. Initial Develop initial prototype requirements Identify problem Convert to operational system Working prototype New If prototype is inefficient requirements Problems Revise and Implement and use prototype enhance prototype Next version Figure 1: Prototyping Methodology

A logical data flow diagram depicts the movement of data logically, as opposed to a physically organised data flow diagram, which depicts the movement of data physically. What does the term "MetaData" refer to in the context of a data warehouse? Why is it regarded as having such significance?

Solve part a,b,c thanks