FoodWorks comes with several sets of food composition data, or food composition tables, containing foods and their nutrient values. These are referred to as datasources. Datasources are not stored in your FoodWorks database and are not modifiable by you. The FoodWorks package contains a number of datasources. To check which datasources you have licensed, see Which edition of FoodWorks am I using?. For information on other datasources, contact Xyris Software.
The foods in the datasources are referred to as reference foods. They are not FoodWorks documents and are not modifiable by you. Note that you can search the foods all the available datasources in the Query window - see How do I search for foods in the Query view?.
When you are creating a Raw Material, you can base its nutrient values on a reference food from the datasources. See How do I base nutrient analyses on another food?
You can also create a data source from your FoodWorks database, allowing you to make your own data available to other FoodWorks users - see How do I publish my data as a FoodWorks datasource?.