A data model says what information is to be contained in a database, how the information will be used, and how the items in the database will be related to each other.
(To combine and synthesize disparate
data)
Simple table(s), hierarchical, 3rd Normal Form. One of the most widely used methods for developing data models is the entity-relationship
model. The relational model is the most widely used type of data model. Another example is NIAM.