HSQLDB (Hyper SQL Database)

HSQLDB (Hyper SQL Database) is a SQL relational database system written in Java that claims to offer a small and fast database engine with transactional capabilities. According to the vendor, HSQLDB is suitable for a wide range of applications and businesses of all sizes, including small startups and large enterprises. It is commonly used by professionals in software development, data analysis, web development, research institutions, and education.