a rich, multi-user data management environment that supports efficient storage and use of all the common spatial data types (vector, raster, images, survey, topology, etc

Geodatabase stands for geographic database and stores geographic information inside a DBMS or database management system. A geodatabase supports advanced capabilities such as geometric and logical networks, true curves, complex polylines, and user-defined features. They are the modern equivalents of shapefiles and coverages stored in a DBMS. Geodatabases support large collections of objects in a database table and features with geometry. The feature classes and tables contained in geodatabases can be related to one another. In order to define the relationships between objects in a geodatabase, a relationship class must first be created. These relationships allow someone to use attributes stored in a related object to symbolize, label, or query a feature class.

a geographic database that provides services for managing geographic data. A geodatabase is hosted inside a relational database management system. A geodatabase may contain feature datasets.

An ArcInfo 8 data storage format. A geodatabase represents geographic features and attributes as objects and is hosted inside a relational database management system.

A geodatabase is a database with extensions for storing, querying, and manipulating geographic information and spatial data.