Introduction to shapefile, coverage, and Geodatabase

ArcGIS files are divided into three types: shapefile, coverage, and Geodatabase.
For example, if you use the TXT and DOC file formats that have been used for a long time, you have not checked their differences and relationships, you don't need to worry too much about learning so many data formats in ArcGIS. You just need to know some of their basic applications:

Shapefile: A file format that stores GIS data based on files. It should be made up of at least. SHP,. DBF, And. shx files, respectively, storage space, and the relationship between attributes and the former two. Is a common data format in GIS.String 4

Coverage: A topological data structure. Its principles are discussed in general GIS principles. The data structure is complex. properties are stored in the info table by default. Currently, ArcGIS still has some analysis operations that can only be performed based on this data format.

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Geodatabase: a data format launched when ArcInfo was developed to ArcGIS. It is a GPS data format stored Based on RDBMS, which has two categories: 1. personal geodatabse is used to store small amounts of data in the MDB format of access. 2. ArcSDE geodatabse stores large data in large databases such as Oracle, SQL Server, and DB2. Concurrent operations can be implemented, but independent user permission is required.
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