Singapore GCE A-Level H3 Geography Practice Questions - Singapore GCE A-Level H3 Geography (SEAB Syllabus 9822) Exam

Vector models store spatial data as continuous elevation pixels, whereas raster models use explicit coordinate nodes and connecting vectors. Vector models are restricted to qualitative attribute storage, whereas raster models can only store integer geographical codes. Vector models represent features using discrete points, lines, and polygons with clear boundaries, whereas raster models represent continuous surface attributes across a grid of uniform cells. Vector models cannot perform topological overlay operations, whereas raster models rely exclusively on relational databases.