If you are not familiar with how databases work, then it can seem a little overwhelming in the beginning. It can all be simplified with a little information. A database is collected data arranged in a specific way, making it simpler and easier to find data when needed. While a data base can be used for single user applications, they are very helpful for systems that have multi-users.
The most popular type of database is the relational. This type of database makes it easier to find and sort specific information. Tables are used to store information. Each table contains a column or multiple columns to store information that can be found easily when needed. The original databases were flat and information was filed in one long text file.