Tag: Entity Relationship

Systems Modeling (part 1)

Posted on by SQL Master

How to create a conceptual model of a system? One of the most important task of an analyst is to turn the requirements provided by the client or user into a physical model. There are many methodologies to represent business rules that will be implemented in an information system. On this post we will use … Continue reading “Systems Modeling (part 1)”

Data Modeling – What´s the point of organizing data?

Posted on by SQL Master

In an environment where a very large volume of information is treated, it is necessary to define a way in which the information is structured and well defined, capable of determine (explicitly or implicitly) the flow of information and its relationships. As we can see in the picture above, the information is organized by “Entities”, … Continue reading “Data Modeling – What´s the point of organizing data?”