Good definitions but the information was a jumble when it came to the examples. At first I thought having examples for different versions (access, MySQL, ect.) that people in technology field use daily would be nice but it got confusing very early on. This book could be useful for the history of the technology field and definitions, but that's not what I wanted from a book to help me better myself in the field I want to work in. In my opinion, the book could have benefited from an editor, better descriptions to go with the pictures, and maybe even a workbook for all the different versions.