In any research or decision-making process, always follow the logical sequence of steps such as data collection, analysis, and interpretation before forming policies.
The correct sequence for the process typically follows this order:
1. Survey (to gather information)
2. Database (to organize and store the information)
3. Analysis (to analyze the data)
4. Interpretation (to interpret the results)
5. Policy formation (to form policies based on the results)
Thus, the correct order is \( \boxed{3, 1, 2, 5, 4} \).