Put another way, a ton of gravel will occupy far less space than a ton of Styrofoam.   Crushed stone, for example, has a density of 100 pounds per cubic foot (lb/ft3), which is 1600 kilograms per cubic meter (kg/m3), which is 1.6 metric tons per cubic meter.
HPSS is software that manages petabytes of data on disk and robotic tape libraries. HPSS provides highly flexible and scalable hierarchical storage management that keeps recently used data on disk and less recently used data on tape.
Here we will learn how to configure HSQLDB in Spring web application. HSQLDB (HyperSQL DataBase) is the SQL relational db engine written in Java. It offers a small, fast multithreaded and transactional database engine with in-memory and disk-based tables and supports embedded and server modes.It includes tools such as a command line SQL tool and GUI query tools.ere we will learn how to configure HSQLDB in Spring web application. HSQLDB (HyperSQL DataBase) is the SQL relational db engine written in Java. It offers a small, fast multithreaded and transactional database engine with in-memory and disk-based tables and supports embedded and server modes.