The above tool (shown as the header image) demonstrates that once a person has been added into the database, the data can be recycled by simply selecting and clicking. At each such data usage point the application's built in features can check the user's work and if applicable, notify the user that he or she may be making a mistake.
Usually the database applications have all or most of the following functionality areas:
Somehow the data has to get into the application. It can be entered manually, or uploaded from different sources, or automatically collected based on, for example, user behavior, or on some specified criteria. There are two important points to this:
So, how do you enter already entered data to different parts of the application? You don't enter it, you select it. Instead of entering data more than once, you simply select it where needed in a combination needed. If you actually have to enter the same data in more than one place, there may be something wrong with the application.