Abstract
AbstractIn previous units, you learned about GIS concepts, spatial data, data models and data structures. In a typical GIS, both spatial and non-spatial data are used. Spatial data describes the location of features, whereas non-spatial data describes their characteristics. Attribute data is another name for non-spatial data. Geospatial data is a combination of both types of data. It means that both (spatial and non-spatial) data are required for a GIS to function properly. In this chapter, we will go over the concept of non-spatial data in depth. On the completion of this chapter students will be able to learn the following concepts about non-spatial data/attribute data: Introduction Basics of the Non-Spatial Data in geoinformatics Concept of the Relational Model Understanding the concept of joins, relates and relationship classes within GIS Spatial Join Concept of the entry of attribute (tabular data) Fields and attribute data modification. KeywordsNon-spatial dataDatabaseSSURGONormalizationRelationshipData entry
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