u201c multimedia u201d 115 for documents related to www hypermedia and multimedia respectively logical databases are also associated with meta information indicated in fig1 as meta information 104 1 111 1 and 115 1 document management system 100 supports queries that go across several physical or logical databases or which search based on a particular topic subset thus specific databases can be created for specific topics of interests of document management system 100 39 s users for example in fig1 logical databases resulting from retrieved documents or subscription based on topics of interest include databases 110 and 111 i e specified by keywords u201c xml u201d and u201c hypermedia u201d document management system 100 also provides a graphical user interface 150 graphical user interface 150 includes a general administrative interface u201c database viewer u201d the database viewer e g forms 116 117 and 118 of fig1 allows the user to specify database or domain to view or administrate to specify a keywords and queries to retrieve or subscribe to specific web documents or to view query and organize the databases a query language wql which is based on the well known query language sql 3 is provided for use with document management system 100 and a visual interface called u201c webifq u201d for u201c web in frame query u201d is provided to assist the user in pose complex wql queries an example form for webifq is shown as form 119 of fig1 in a shared environment access control is provided to both protect privacy and to promote information sharing.