PostgreSQL is one of the most advanced relational database management systems (RDBMS). It has extensive security features such as role-based permissions, transport-level security (SSL/TLS), and network-level security using TCP/IP sockets. In addition, the community-driven RDBMS is reliable, scalable, and supports modern data types, including `hstore`, `array`, and `user-defined` types. The `hstore` data type has a wide array of applications, and you can use it to store semi-structured data as ke......