Tutorial on forex

Since the forex market is the interbank market, the main and only source of quotations are banks. Others just relay bank quotes.

What is the bank quote.
Virtually every major bank quotes its clients (individuals and legal entities) and other counterparty banks (banks with whom the contract signed and exchanged the payment details) the prices at which he is prepared to make a deal now. The process itself is a quotation special technical equipment (POS terminals, Internet, and sometimes by phone).
This - the indicative quotations, and the bank generally has no obligation to bargain for this price, since the actual price may vary based on the facts: the status of the client (is there a risk of currency supply or not), the volume of operations (small, private, or a very large amount) the date of Value (actual settlement of the transaction), etc.

Where to go quotes
These quotations, as well as quotes go real deals in specialized information systems (Reuters, Bloomberg, Tenfor, DBC, etc.), and from information systems come from around the world - customers information systems (back to all banks, private individuals, legal persons etc., all of who is connected to systems).

Thus, the quotations obtained from information systems, are indicative and does not yet mean that somewhere in the world for him was to make a deal. Moreover, not all the quotations of actual transactions may fall into the information system.
Dealing centers are also clients of information systems and provide a common thread quotes to its customers, including their own quotes and quotations, which were made a deal with their own customers.