The word schema comes from the Greek word σχήμα, which means shape, or plan. In web development we should take care that our websites have a sensible shape. Your website having the correct schema is important.
Adding Alt tags to images using image_tag in Rails
Rails makes it easy to add alt tags to images using a handy helper method.
A Pragmatic Approach to adding Schema
Adding Schema to your website doesn't have to be daunting, here is a pragmatic approach
Getting my Dublin Core on