A service specifies the name of a program, routine, or process that performs a specific system function to support other programs, particularly at a low level (close to the hardware). Servicename specifies the name given to the service key in the registry. Note that service key name may differ – and in most cases does differ – from the service display name.

Note that psql.all is a shortcut method available only with the psc utility. It affects both the PSQL transactional and relational services and can be used with the psc parameters start, stop, or restart.