SQL for Dummies

n Part I, I present the big picture. Before talking about
SQL itself, I explain what databases are and how they're
different from data that early humans used to store in
crude, unstructured, Stone-Age computer files. I go over
the most popular database models and discuss the physi-
cal systems on which these databases run. Then I move
on to SQL itself. I give you a brief look at what SQL is, how
the language came about, and what it is today, based on the
latest version of the international standard SQL language.