what is database trading and how to do it ???

Trading data is a sub-category of financial market data. It provides real-time information about stock and market prices as well as historical trends for assets such as equities, fixed-income products, currencies and derivatives.

A Proven Process for Trading Economic Data
Step 1: Establishing the Baseline. Start by understanding the macroeconomic context. ...
Step 2: Analyzing the Surprise Factor. Beyond median forecasts, consider the range of expectations. ...
Step 3: Considering Pre-Positioning and the Bigger Picture.