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.
dr lovins cites figures for the capital cost of solar from the us department of energy these show that the weighted average capital cost of 113 utility scale solar projects completed in 2012 was $ 3900 per kilowatt kw