what is the difference between (a) raster data and vector data (b) raster data model and vector data model (c) spatial data and aspatial data ?

Hi Caprice. Raster data type consists of rows and columns of cells, with each cell storing a single value.Vector data are often expressed as vectors, by considering those features as geometrical shapes. Raster data model: A way of representing the earth's surface by sub-dividing it into small pixels