A database management system (DBMS) is a tool we use to create and manage databases. A DBMS requires several components to come together. Firstly, we need data, which is the information stored in a database. Text, numbers, booleans (i.e. true/false statements) and dates typically represent our data. Once we gather an organized collection of data we can refer to it as a database. We can think of the schema as the blueprint of a structured database that explains the type of data stored in a database and how the data is related.