Not so long ago, developers of Ruby on Rails increased their efforts to make the framework more comfortable and convenient to work with PostgreSQL as a data storage. In the spirit of these efforts, we will talk about the special features of Ror, discuss specifics of utilizing numerous data types provided by PostgreSQL and, of course, mention many ways to avoid shooting yourself in the foot.<br /> <br /> In addition, we will discuss how various features of the database are supported in older version of RoR, what changes are required should you decided to migrate to a newer version, and how to apply the new functions of PG well if a migration isn't possible.