This is the root node for the DatabaseMetaTreeModel. Its children are
DBMetaCatalogNode objects.
author: Florian Bruckner version: $Id: DBMetaRootNode.java,v 1.1.2.1 2005/12/21 22:32:42 tomdz Exp $
Creates a new instance of DBMetaRootNode
Parameters: pdbMeta - DatabaseMetaData implementation where this node gets its data from. Parameters: pdbMetaTreeModel - The TreeModel this node is associated to.