The ExternalDatabase class encapsulates the behavior required to access entries in an external database. This class represents a connection to an external database and provides methods that operate on the data source.
External databases cannot be passed across nodes. The open and close method calls or any access of an ExternalObject instance in the external database must occur on the same node.
For details about the properties and methods defined in the ExternalDatabase class, see "ExternalDatabase Properties" and "ExternalDatabase Methods", in the following subsections.
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