http:///db/// ). Within a station database (db, Swid is relative ( /// ). URL: Uniform Resource Locator. The global address of a document or other resource. Within the context of Niagara, a URL is similar to a Swid. A Swid defines a particular node in a Niagara station database, whereas a URL can include a Swid or a resource located elsewhere. To access your system, you enter a URL in your browser’s address bar (location bar, typically with the “http://” prefix and the IP address (or host name) of the target Web Supervisor or JACE controller. Various URLs used for routine access to Niagara stations are provided throughout this document.