From the course: Real-World GIS (2014)
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Understanding geodatabases - ArcGIS Tutorial
From the course: Real-World GIS (2014)
Understanding geodatabases
The third georelational model offered by Esri, is the Geodatabase model and it was introduced in ArcView 8 or ArcGIS 8. Unlike the Georelational model, the Geodatabase model is a contained file system, and is a true relational database with all the advantages associated with database management. Instead of a flat file system the Geodatabase stores the Geo graph data as objects and you can apply structured query language, or SQL, functions and operators on the Geodatabase. Esri's first model started with the personal geodatabase. Which was based on the Microsoft axis database. And has a two gigabyte storage limit. It is being phased out currently. And in place, a new file geodatabase with no size limit is available. Which is important for GIS data, because it often exceeds the two gigabyte limit. The geodatabase vocabulary is simple. Geodatabases have two main aspects, feature datasets and feature classes. Feature datasets house a series of Feature Classes that share the same…
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