Question

Which one of the following statements is NOT correct in the context of shapefile?

• A. \( {It is an example of georelational data model} \)
• B. \( {It is a topological data model} \)
• C. \( {It treats points as pairs of } (x, y) { coordinates} \)
• D. \( {In this, polygons can have duplicate arcs for shared boundaries} \)

Hint:

A shapefile is a {non-topological} format. Unlike topological data models, it does not store relationships like adjacency or connectivity. For topological consistency, use formats like {coverage} or {geodatabase}.

Answer 1

The Correct Option is B

A shapefile is a widely used geospatial vector data format for geographic information system (GIS) software. It is an example of a georelational data model, where spatial and attribute data are stored separately but linked through a common identifier. However, shapefiles do not store topological information, which means they do not explicitly record relationships such as connectivity and adjacency. Therefore, polygons may contain duplicate arcs for shared boundaries, and maintaining data integrity for topological relationships requires additional processing or storage formats like geodatabases. Hence, the statement in option (B) is not correct, making it the correct answer for this question.