[GRASS-user] Definition of Category for Vectors

[Pedro Roma]

Hi guys

I've been reading Neteler/Mitasova book and I have a question:
Regarding vector data, what is a category? and Why do I need to have
category readers/writters? Because, for What I understood, a category is
like a Feature ID that links a geometry to its attributes in a DB. Is this
correct?

Thanks and thanks to Luis Lisboa for lending me the GRASS book (for 2 weeks
:) )

Best regards,
Pedro Roma
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