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Database
@GE{Database}: ArangoDB can handle multiple databases in the same server
instance. Databases can be used to logically group and separate data. An ArangoDB
database consists of collections and dedicated database-specific worker processes.
There will always be at least one database in ArangoDB. This is the default
database, named _system. This database cannot be dropped, and provides special
operations for creating, dropping, and enumerating databases.
Users can create additional databases and give them unique names to access them later.
Database management operations cannot be initiated from out of user-defined databases.
When ArangoDB is accessed via its HTTP REST API, the database name is read from the request URI. If the request URI does not contain a database name, the database name is automatically determined by some algorithm.