Encroachment refers to a building, part of a building, or obstruction that physically intrudes upon, overlaps, or trespasses upon the property of another; typically verified by a survey.
Original data compiled and studied for a specific purpose. For example, a structured survey might be conducted for the purpose of discovering current attitudes on a particular topic; raw survey responses would be primary data.
A survey is a methodologically structured process by which information is collected from a group of respondents to understand public attitudes, preferences, behaviors, or characteristics. Surveys are widely used in various fields such as marketing, political science, sociology, and public health.
