The whole idea behind databases is to store information — data — in order to look at it later. The place where that data is going to be kept is referred to as a table. A table consists of columns and each column can be defined to store a variety of specific kinds of data. You can make small tables or large ones. The columns on the tables can be made so that they have to have data in them or they can be empty. The choices are yours to make, but you need to know how to set tables up appropriately.
In addition to tables, we’re going to start learning about columns. Columns can be very generic in nature, supporting all sorts of different kinds of data, or they can be extremely specific, storing only one type of data. I’ll introduce a number of different types of data so you can begin understanding the wealth of choices that are available to you.
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