http://docs.openlinksw.com/virtuoso/concepts.html Conceptual Overview OpenLink Virtuoso Universal Server: Documentation virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com 2008-07-21T15:51:36Z OpenLink Software Documentation Team http://docs.openlinksw.com/virtuoso/../images/misc/logo.jpg http://docs.openlinksw.com/virtuoso/coredbengine.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Core Database Engine 2008-07-21T15:51:36Z Core Database Engine http://docs.openlinksw.com/virtuoso/thevdb.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Virtual Database (VDB) Engine 2008-07-21T15:51:36Z Virtual Database (VDB) Engine http://docs.openlinksw.com/virtuoso/webinternetproto.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Web & Internet Protocol Support 2008-07-21T15:51:36Z Web & Internet Protocol Support Virtuoso provides direct access to a number of Internet protocols through built in procedures. These protocols include SMTP, NNTP, POP3, HTTP, XML and many more. Combined with Virtuoso's native database and virtual database capabilities applications can be developed very rapidly from scratch or existing systems can be enhanced with a rich set of tools. An old customer table can be used to create a mail shot; a products table can now generate an XML file which can be converted to plain text and or HTML via XSLT which can be emailed to the customers every week automatically using the scheduler, or on request from a VSP page served by the HTTP server. The possibilities are endless and all these abilities are contained within a single server. http://docs.openlinksw.com/virtuoso/websrvcsproto.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Web Services Protocol Support 2008-07-21T15:51:36Z Web Services Protocol Support The Internet is reaching a stage where automatic processes want to rely on other sites and services presenting their uses in a standard way. This is Web Services. What ever an organization or repository of data contains the it needs to be exploited as fully as possibly. This is exposing existing systems as Web Services. These need to be accessible over well known protocols which combine to provide a service over the web. SQL provides the means to query data within a database. This is a very well known and supported operation. The query may or may not be able to make use of free text indexes to obtain results faster and more accurately from textual sources. The source could even come from a remote database contacted over ODBC, JDBC or OLEDB - more well supported standards. The results may be shipped to another server for further processing. Further processing could include transformations into various XML's directly or via an XSLT stylesheet. This collaboration of services can be enhanced further with other Web and Internet protocols for the grand objective of making parts of useful information or ability consumable over the Internet as a Web Service. http://docs.openlinksw.com/virtuoso/conceptarchitecture.html virtuoso.docs@openlinksw.com virtuoso.docs@openlinksw.com Architecture 2008-07-21T15:51:36Z Architecture The base of Virtuoso is the Virtuoso Data Management. This handles the normal tasks of the database and virtual database collaborating between local native and remote SQL and XML based resources. Web and Internet services and protocols then sit atop of this layer to expose Virtuoso to the Web and its users.