Computing device with custom database operating system

A database system comprises:

• a plurality of sub-systems, wherein a sub-system includes a plurality of computing devices, wherein a computing device of the plurality of computing devices includes a plurality of nodes, wherein a node of the plurality of nodes includes a central processing module, main memory, and disk memory;
• wherein the computing device stores a computing device operating system, a sub-system database operating system, and a local database operating system in the main memory and/or in the disk memory,
• wherein, for an application specific to the database system, the sub-system database operating system manages a data exchange between a first computing device of the plurality of computing devices and a second computing device of the plurality of computing devices,
• wherein, for the application specific to the database system, the local database operating system manages a data exchange between the central processing module of a first computing device of the plurality of computing devices and a database general section of the main memory of the first computing device, and
• wherein, for a computing device application, the computing device operating system manages a data exchange between the central processing module of the first computing device and a computing device general section of the main memory of the first computing device.