1.5. Summary
Like most things in life, the little things do matter when thinking about an RDBMS. Sure, almost anyone who knows enough to even think about picking up this book has an idea of the concept of storing data in columns and rows, even if they don't know that these groupings of columns and rows should be called tables, but a few tables seldom make a real database. The things that make today's RDBMSs great are the extra things — the objects that enable you to place functionality and business rules that are associated with the data right into the database with the data.
Database data has type, just as most other programming environmentsdo. Most things that you do in SQL Server are going to have at least some consideration of type. Review the types that are available, and think about how these types map to the data types in any programming environment with which you are familiar.
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