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1. A representation of the world using points, lines, and polygons. Vector models are useful for storing data that has discrete boundaries, such as country borders, land parcels, and streets.
, 2. In vector data the features are recorde … 2. In vector data the features are recorded one by one, with shape being defined by the numerical values of the pairs of xy coordinates. A point is defined by a single pair of coordinate values. A line is defined by a sequence of coordinate pairs defining the points through which the line is drawn. An area is defined in a similar way, only with the first and last points joined to make a complete enclosure.oints joined to make a complete enclosure.
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