The relationship between the trader (the customer) and the market maker (the bank; the trading platform; etc.) is simply based on the fundamental market forces of supply and demand.

Moving Average Convergence/Divergence (MACD): This indicator involves plotting two momentum lines.

Inflation levels and trends: Typically, a currency will lose value if there is a high level of inflation in the country or if inflation levels are perceived to be rising. This is because inflation erodes purchasing power, thus demand, for that particular currency.