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All of the feature classes in a feature dataset share the same spatial reference system. [31]: 54 Versioning In an enterprise geodatabase on a database server (not a file geodatabase), a feature class or table can be versioned to facilitate multi-user editing. [14]
In geographic information systems, a feature is an object that can have a geographic location and other properties. [1] Common types of geometries include points , arcs , and polygons . Carriageways and cadastres are examples of feature data.
A geodatabase can store multiple feature classes or type of features within one file. [72] Geodatabases in ArcGIS can be stored in three different ways – as a "file geodatabase", a "personal geodatabase", or an "enterprise geodatabase" (formerly known as an SDE or ArcSDE geodatabase). [73]
A class is a program code template of an object. It provides initial values and implementations of an SSDM object. A class can be defined as either abstract or concrete. A concrete class can be directly used to create an object. Concrete classes can be thought of as feature classes or object classes in the ESRI geodatabase. [6]
Raster data is stored in various formats; from a standard file-based structure of TIFF, JPEG, etc. to binary large object (BLOB) data stored directly in a relational database management system (RDBMS) similar to other vector-based feature classes. Database storage, when properly indexed, typically allows for quicker retrieval of the raster data ...
For example, the Esri geodatabase stores vector data ("feature classes") as spaghetti data, but can build a "network dataset" structure of connections on top of a line feature class. The geodatabase can also store a list of topological rules, constraints on topological relationships within and between layers (e.g., counties cannot have gaps ...
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Geographic database (or geodatabase) is a georeferenced spatial database, used for storing and manipulating geographic data (or geodata, i.e., data associated with a location on Earth), [a] especially in geographic information systems (GIS). Almost all current relational and object-relational database management systems now have spatial ...