![]() You'll actually see data organized like this in the real world all around you. The data has to be modeled and described so that it can be input and output in a method that can be duplicated and applied to the business rules of the organization that uses the system. Data modeling is the initial purpose of any database. The relational model provides a simple and flexible way to describe data. ![]() In this process, the large collection of unorganized data is simplified into its smallest pieces, and then related with other small pieces of data to recreate a big picture in a more organized format. By breaking data into smaller pieces, accuracy is ensured by making data entry a one-time process, and then reusing that data by connecting it with other pieces. In the relational model, data is broken down into small pieces, which are connected with each other by relationships.
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