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.
Cost of Solar Panels. The cost of solar panels involves more than just the sticker price on the panels. In addition to the material, you will need to pay for installation and maintenance. Solar energy costs approximately $4 to $9 per watt, with the average price at $7 per watt. The size of your home doesn't matter. You will need to look at your monthly energy consumption to determine the amount you need.