Describes a way of representing graph-like data in Postgresql, and querying it in a flexible way.

Comparing the developer experience in terms of time and resource usage of performing clean installs of Oracle and PostgreSQL.

As it turns out, PostgreSQL has a number of ways of storing loosely structured data — documents — in a column on a table.

• hstore is a data type available as a contrib package that allows you to store key/value structures just like a dictionary or hash.
• You can store data in JSON format on a text field, and then use PLV8 to JSON.parse() it right in the database.
• There is a native xml data type, along with a few interesting query functions that allow you to extract and operate on data that sits deep in an XML structure.