Data Types in SQL Server: A Complete Guide to Choosing and Using Them
SQL Server data types are the foundation upon which your entire database structure rests. They define the kind of data you can store in each column, from simple integers and text strings to complex date/time values and binary data. Picking the right SQL data type means your data is stored efficiently, queries run fast, and your information stays accurate. Using an overly large data type wastes space and slows things down, while using a too small type risks data loss or errors.