About the Siebel Environment

The Siebel Business Applications environment consists of the following entities, listed in Table 2-1.

Table 2-1 Siebel Application Entities

Entity	Comments
Siebel clients	Client types include Siebel Web Client, Siebel Mobile Web Client, Siebel Developer Web Client, and Siebel Mobile applications. The Siebel Tools client is a special-purpose client for developers.
Siebel Enterprise Server	The logical grouping of Siebel Servers for a multiple server deployment. (For a single Siebel Server and single Web server deployment, the Siebel Enterprise Server contains a single Siebel Server.) The Siebel Enterprise Server, collectively with the Siebel Gateway Name Server, provides both batch mode and interactive services to and on behalf of Siebel clients.
Siebel Gateway Name Server	A name server that provides the persistent backing of Siebel Enterprise Server configuration information.
Siebel database	The Siebel tables, indexes, and seed data installed on the RDBMS. Database client software is also required.
Siebel File System	One or more directories that store physical files used by Siebel clients and Siebel Enterprise Server.

The Siebel Enterprise Server environment represents the middle tier within the three-tiered Siebel Business Applications environment, between the Siebel client and the Siebel database. For more information, see Siebel Deployment Planning Guide.