Abstract: Methods and systems allow access to information in an enterprise environment that stores information in data silos. Entity type metadata, relations between entity types and access control information is extracted from the data silos and represented in a data virtualization system. Metadata information representing security information extracted from multiple data silos is combined to construct global security information for the enterprise. Security roles are combined to generate global security roles and access control lists are combined to generate globalized access control lists. The global security information can be modified by system administrators. Security information is refreshed from the data silos for each session created by the user and is applied to all data access requests created using the session.

Abstract: Methods and systems allow integrated search in an enterprise environment that stores information in data silos. Entity type metadata, relations between entity types and other information related to entity types is extracted from the data silos. Metadata information extracted from multiple data silos is combined to construct a global data model for the enterprise. Entity instances present in the data silos are analyzed to generate documents representing the entity instances. Relations between documents are represented by links between documents. The documents generated are indexed to allow searching across the enterprise. Search results are presented in order of their importance to the searcher.