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Spatial Data Models in GIS Questions and Answers

1.

The 'boundary model' is sometimes also called as :

Exam Year(s)

MH SET - 2023, SET Exam - 2023,

Answer: A

The boundary model is also called the Topological data model.

In GIS, the boundary model represents areas by their bounding lines: arcs that meet at nodes and carry the identity of the polygons on their left and right. Because these explicit relationships of connectivity, adjacency and containment are topology, the boundary model is also known as the topological (arc-node) vector data model.

Temporal models deal with change over time, not with boundaries, and 'topological discrete' and 'temporal discrete' are not standard names for this model.

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2.

A good example of raster data is ....................

Exam Year(s)

MH SET - 2024, SET Exam - 2024,

Answer: A

A good example of raster data is satellite imagery.

Raster data store the world as a grid of cells (pixels), each holding a value such as reflectance, elevation or land cover. A satellite image is exactly that: rows and columns of pixels recorded by a sensor.

A railway line is a line feature, and dug wells and airports are point (or small polygon) features. In a GIS such discrete objects are normally stored as vector data, with coordinates for points, lines and polygons.

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