Data Models in General
What is a data model?
- The specific set of data structures, and their relationships, that define a unique instance of data about a concept or an object.
- Example:
- A customer is represented by a customer name and credit card number
- A product is represented by a product code and price
- There is a one-to-many relationship between a customer and products
- From:
- “Principles of Database and Knowledge-Base Systems”, J.D. Ullman, Volume I, Computer Science Press, 1988, p. 32.