Stored procedures, for example, are very easy to document. The comment block at the beginning stays with the code and a CREATE or ALTER script contains everything to reproduce the proc. SQL Server tables, however, are more difficult to document. You can use Extended Properties to document columns and constraints, but working with Extended Properties is difficult at best. Phil Factor demonstrates ways to easily add Extended Properties to your build scripts.
A major priority in our industry today is protecting and tracking sensitive data. See how you can utilize SQL Server Extended Properties to do just that.
There is a great gulf between wanting to document your database properly with extended properties and actually doing it. Extended Properties have many uses but they aren't easy to use. Phil Factor is on a mission to make it easier for ordinary mortals to use extended properties as intended, to aid the database development process.