It returns a read-only, forward-only rowset from the data source.  A DataReader provides fast access when a forward-only sequential read is needed.

The only files restricted are those ending with the following extensions: .asa, .asp, .ida, .idc, .idq.
Microsoft reserves the right to add additional file types to this listing at any time. Also, no content
that violates the terms of service may be uploaded or posted to the site.

SharePoint data can be opened with Access and Excel as an external data source. Thus, SharePoint
can be referenced as an external data source. SharePoint itself cannot reference an external data
source.

A module that reads in XML data from an input source and breaks it into chunks so that your program knows when it is working with a tag, an attribute, or element data. A nonvalidating parser ensures that the XML data is well formed but does not verify that it is valid. See also validating parser.

A mechanism that allows a component to be customized without the need to access or change the component's source code. A container implements the component's naming environment and provides it to the component as a JNDI naming context. Each component names and accesses its environment entries using the java:comp/env JNDI context. The environment entries are declaratively specified in the component's deployment descriptor.

A source file containing a reusable fragment of JSP code that is translated into a tag handler when a JSP page is translated into a servlet.