What kind of information can be stored in a database?

Strictly speaking, no information is stored in a database, data is. There is a difference. Data is things like names, addresses, dates of birth etc. Information is what you can get from that data. So if you have a list of dates of birth, it does not specifically say who is the oldest person. By looking through the data, you can find that information. You could get a total of how many people have their birthday in a particular month. The data will not say something like "There are 7 people who were born in the month of February." All that is there is the list of actual dates of birth. You can derive that information from the database. Data is stored in different forms, such as plain text, numbers, dates, times, logical data