Data modeling is the process of learning about the data, and the data model is the end result of the data modeling process. A data model is a set of symbols and text that precisely explains a business information landscape. A box with the word “Customer” within it represents the concept of a real Customer such as Bob, IBM, or Walmart on a data model. A line represents a relationship between two concepts such as capturing that a Customer may own one or many Accounts.
Dave De Noia