PostgreSQL. This is a query tool for PostgreSQL databases. While there is a database explorer it is NOT meant for creating/dropping databases or tables. The explorer is a visual aid for helping to craft your queries. There is a language service that should keep at most a single connection open to the database (assuming one was selected). As a Data Scientist and AI programmer, you do most of the works on the JSON data. You usually fetch the JSON data from a particular URL and visualizes it. But traversing into a JSON data is always a challenging task for beginners. In this intuition, you will know how to get JSON data from URL in python. You will learn the following things.