I am trying to learn RoR and have a couple of misconceptions I’d like to
clear up for myself.
One of the great things that are touted in every demo of RoR is the
ability to add a new column to a table and it automagically appears on
the web page. While this is nice and all, this doesn’t happen auto
magically. It means that on every web request, the RoR framework must
query the schema somehow. That’s convenient but it’ll bring a well
trafficked site to its knees. Does this only happen in the Dev mode?
All tutorials and examples use MySQL as the database. How does one
access MSSQL or Sybase? Is there a standardized access technique?