The reports of human disease attributed to bird mites are rare, but they do occur. There have been reports by some people of strange fibers on the skin and Morgellons symptoms that started after a mite infestation, but the link is vague and requires further research.
A universe is a business-oriented mapping of the data structure found in databases: tables, columns, joins, etc. It can represent any specific application, system, or group of users. For example, a universe can relate to a department in a company such as marketing or accounting.
Data stored in a raster format represents real-world phenomena: 1  Thematic data (also known as discrete) represents features such as land-use or soils data.  Continuous data represents phenomena such as temperature, elevation, or spectral data such as satellite images and aerial photographs.