Niagara Release Niagara Browser Access Guide Revised: August 15, 2002 Chapter About This Document Commonly Used Terms x archives log (sampled) data from other networked JACE controller stations in an SQL database, and typically also serves graphics (GxPages). A JACE controller station provides access to (and integration of) various networked control devices, and may also serve GxPages. SQL: Structured Query Language. A database language widely-used for querying, updating, and managing relational databases. The appdb created by the Web Supervisors database service is an SQL database. Swid : System-wide identifier. Each node (container, service, object, etc) in the station database has a name. Since all nodes are part of a station's database tree, these names can be concatenated together to create a unique system wide identifier (Swid), which provides the full path name of the node much like a file system. Full Swid syntax follows standard URL form (