In a distributed database system, a program often referred to as the database's back end runs constantly on a server, interpreting data files on the server as a standard relational database. Programs on client computers allow users to manipulate that data, using tables, columns, rows, and fields.
A solar energy system big enough to power a computer and a few other small items might cost you about $700 to $1000. These are also well suited for RVs, boats and camping. Learn more about portable solar energy units.
solar power cost per kwh a useful figure to use when looking at solar is cost per kwh as this can be directly compared to your current power bill a national renewable energy laboratory report spanning 7 u s states gives a levelised cost of solar of between $ 0 28 and $ 0 46 per kwh for residential solar systemsn example the levelised cost of solar electricity in the 7 u s states calculated earlier drops to from between $ 0 28 and $ 0 46 per kwh to between $ 0 16 and $ 0 31 per kwh with the federal investment tax credit 3 many u s residents are eligible for additional federal and local government subsidies on top of the itc