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How does ArcSDE geodatabase work in SQL Server?
In ArcSDE geodatabases in IBM DB2, Microsoft SQL Server, and PostgreSQL, these columns use the native XML of the database management system and, therefore, can be queried using XPath expressions with SQL. In geodatabases in Oracle and Informix, the XML columns use ArcSDE XML, which stores information as BLOBs in a series of separate tables.
Why are views not registered in the geodatabase?
Views exist as objects in the database and are not registered with the geodatabase. Changes that are made to the schema of the underlying table or tables do not get reflected in the view.
Where can I find a geodatabase in ArcGIS?
It is the physical store of geographic information, primarily using a database management system (DBMS) or file system. You can access and work with this physical instance of your collection of datasets either through ArcGIS or through a database management system using SQL.
What is the internal structure of the geodatabase?
The internal structure of the geodatabase is represented as a series of simple tables called the geodatabase system tables (the tables prefixed with GDB_), which track the contents of each geodatabase. They essentially describe the geodatabase schema that specifies all dataset definitions, rules, and relationships.
How does ArcGIS Store Geometry in a geodatabase?
When storing geometry in the geodatabase, ArcGIS populates the SDO_GEOMETRY value from an API object called SE_SHAPE. The SE_SHAPE object can contain simple and complex geometry that may include elevations, measures, CAD data, annotation, and surface patches. The SDO_GEOMETRY data type supports a subset of these geometric properties.
How is the SDO _ geometry column populated in ArcGIS?
The SDO_GEOMETRY column is populated. When storing geometry in the geodatabase, ArcGIS populates the SDO_GEOMETRY value from an API object called SE_SHAPE. The SE_SHAPE object can contain simple and complex geometry that may include elevations, measures, CAD data, annotation, and surface patches.
What kind of data is stored in ArcSDE?
By default, ArcSDE databases in SQL Server use the ArcSDE compressed binary type for feature geometry storage within the SHAPE field. To use the Microsoft geometry and geography data types instead for feature geometry storage, we need to specify them when creating our feature class.