A Web crawler, search engine, browser program, or other client application dynamically accesses data by using "friendly" Uniform Resource Locaters (URLs) that do not require query parameters or other non-intuitive coding. A friendly URL includes a static URL that appears to identify a static resource, such as a Hyper Text Markup Language document. A friendly URL can be a link or entered in a browser program's address field. A data type in the friendly URL is mapped to a data source that dynamically accesses data associated with an intuitive data key in the friendly URL. The data key refers to a specific document, and/or is a search term. A query URL is constructed with the data key, and a data source identifier that preferably refers to a database function and is mapped to the data type. The resulting dynamically accessed data are communicated back to the requesting client application.