XML is a very versatile data format that has been used to represent many different kinds of data, including web pages, books, business and accounting data, programming interfaces, vector graphics, system logs, and games. In a short span of time, it has gained wide acceptance as the document and data standard on the web. As more and more XML data gets generated everyday, a lot of research focus has been on query languages for XML. The World-Wide Web Consortium (W3C) has chosen XQuery as the standard language for querying XML. From an end-user point of view, XQuery sacrifices usability for expressiveness. We introduce FoXQ, a visual language that enables end users to query XML. FoXQ brings a lot of the functionality of XQuery within the reach of the end users without getting them embroiled in the intricacies of XQuery syntax. The query interface is form-based and the query model is based on a document metaphor in which the users formulate queries by filling out forms. / Graduation date: 2004