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In the vector data model, geography is recorded as

  • A.points, lines and polygons with coordinates
  • B.a grid of cells each holding one value
  • C.a photograph georeferenced to the ground
  • D.a list of place names and their descriptions

Answer: A

Each feature is stored by its geometry and its attributes, so a road is a sequence of coordinates rather than a set of coloured cells. This keeps boundaries sharp at any scale of display, since the geometry is redrawn rather than magnified.

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