6. Geomatics Data and GIS
Spatial Databases — Quiz
Test your understanding of spatial databases with 5 practice questions.
Practice Questions
Question 1
Which PostGIS data type performs geodetic calculations on an ellipsoidal model of Earth, automatically accounting for its curvature?
Question 2
Which system catalog table in PostGIS contains definitions of coordinate reference systems, including SRID, proj4text, and authority name?
Question 3
Which PostGIS function reprojects a geometry from one spatial reference system to another?
Question 4
Which PostGIS function creates a region of all points within a specified distance of a given geometry, often used for proximity analysis?
Question 5
What is a key advantage of storing raster data as tiles in PostGIS over a single large raster block?