PostgreSQL is a free, open-source relational database management system, known as the most successful database in the world. It has a long history dating back to 1985, started as a research project at the University of California, Berkeley. It not only supports many advanced features, but its performance can even exceed that of most databases in many application scenarios, including commercial databases. In fact, PostgreSQL has been considered one of the most popular databases in the world, one of the most admired databases by developers, and one of the databases with the strongest user demand.

Longtion Application Builder is a powerful, professional and fully-functional database and Web application generator, specially made for users who are engaged in database development. It can be used to easily and quickly design and develop databases and Web apps without having to write any code. It features intuitive integrated development environment (IDE), object drag & drop operation, small file size, and is easy to learn and use, so that you don't need to have any programming knowledge.