An entity is some sort of “thing” that a database keeps track of. Entities that are some part of the domain being modeled are called kernel entities or independent entities. There are other entities called associative entities that help relate … Continued

One-to-one relationships are the result of splitting one entity into two parts. This article covers some reasons to do that. (This article also assumes familiarity with terms such as entity, cardinality, modality and attributes. If you’re not familiar with these, … Continued