What is ArcSDE? Why ArcSDE? ArcSDE connection configuration options. ArcSDE for Developers. Data. Storage. Data storage with ArcSDE. Organizing features. Types of features. Feature storage. Geometry storage options. Spatial indexing.Relational access and object relational access. Vector tables. Raster tables. The ArcGIS geodatabase. What is the geodatabase? Geodatabase architecture. Accessing and using geodatabase application logic. Vector Data. Raster Data. Geodatabase storage in relational databases. Versioned geodatabases and distributed work flows.