What is an ArcSDE geodatabase?
ArcSDE (SDE for Spatial Database Engine) is a server-software sub-system (produced and marketed by Esri) that aims to enable the usage of Relational Database Management Systems for spatial data. The spatial data may then be used as part of a geodatabase.
What is a enterprise geodatabase?
The enterprise geodatabase is the foundation for building a large-scale GIS with ArcGIS Server Enterprise. It uses a combination of ArcObjects, ArcSDE technology, and RDBMS software to define how data is stored, accessed, and managed by ArcGIS. Conceptually, it stores GIS data in a centralized location.
What is the difference between a file geodatabase and an enterprise geodatabase?
File geodatabases—Stored as folders in a file system. Personal geodatabases—All datasets are stored within a Microsoft Access data file, which is limited in size to 2 GB. Enterprise geodatabases—Also known as multiuser geodatabases, they can be unlimited in size and numbers of users.
Where can I get a RDBMS client for geodatabase?
To connect, you must install an RDBMS client on the client computer. You can obtain an RDBMS client from your RDBMS vendor or My Esri. As users add data to the geodatabase, the geodatabase must be maintained so the data is available to all authorized users when needed and without any depreciation in performance.
Why is ArcSDE used in a geodatabase?
Through many large geodatabase implementations, it has been found that DBMSs are efficient at moving the type of large binary objects required for GIS data in and out of tables. In addition, GIS database sizes and the number of supported users can be much larger when using ArcSDE.
What kind of RDBMS does ArcSDE support?
It makes it possible for GIS data users to utilize their data without need for special knowledge of the underlying RDBMS. As of ArcGIS 10, ArcSDE supports the commercial RDBMS’s Oracle, SQL Server, DB2, and Informix, and the free and open-source PostgreSQL.
Where are the geodatabases stored in ArcGIS Desktop?
A collection of various types of GIS datasets held in a file system folder. (This is the recommended native data format for ArcGIS stored and managed in a file system folder.) Original data format for ArcGIS geodatabases stored and managed in Microsoft Access data files. (This is limited in size and tied to the Windows operating system.)