What is the first topology rule for vector data listed in the text?

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Multiple Choice

What is the first topology rule for vector data listed in the text?

Topology in vector data focuses on how features connect at shared points to preserve geometric relationships during analysis. The first rule emphasizes that features terminate at proper nodes. This means every line ends at a node, not in the middle of an edge or as an isolated dangling segment. This foundational requirement maintains network integrity, allowing correct connectivity, adjacency, and network tracing (for example, routing or watershed flow). While other quality aspects like accurate georeferencing, avoiding duplicates, and ensuring polygons close are important, they come after establishing that endpoints align and terminate at proper nodes.

Topology in vector data focuses on how features connect at shared points to preserve geometric relationships during analysis. The first rule emphasizes that features terminate at proper nodes. This means every line ends at a node, not in the middle of an edge or as an isolated dangling segment. This foundational requirement maintains network integrity, allowing correct connectivity, adjacency, and network tracing (for example, routing or watershed flow). While other quality aspects like accurate georeferencing, avoiding duplicates, and ensuring polygons close are important, they come after establishing that endpoints align and terminate at proper nodes.

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