When i started to learn Python few years ago, I remember I was not very familier with the concept of dictionary and avoided to use it, I decided to map out the so I decided to draw a concept map of built-in properties of dict (the properties from collections.defaultdict is not included). Here is built in properties and methos of python mapping type container, dictionary.  It shows the built-in methods of dictionary in python. SELECT field_name, field_name FROM table_name;