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.
Prices vary for the 2 main types of solar energy systemsâa solar hot water system will cost between $2,000 and $4,000, and a photovoltaic system will cost between $8,000 and $10,000 for a 1 kilowatt system, or $8-$10 per watt.