Data Model
• 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