• Niagara Web Solutions Guide • Niagara JDE User’s Guide • Niagara Concepts Guide Commonly Used Terms Throughout this guide, references are made to acronyms and terms with which you may not be familiar. This section provides a source for defining those terms and is intended to ensure their consistent use. appdb: or application database. The SQL database populated by a station’s database service, for archiving log data and all occurrences of alarms/alerts. An appdb is separate from a station’s configuration database. Typically, only a Web Supervisor has an appdb, although a JACE-NP station may optionally be configured to have an appdb. browser: Or web browser. This refers to an application like Microsoft Internet Explorer or Netscape Communicator, widely used to locate and display web pages.