Table 1.

Summary of the top-level components of the i2b2 platform.

Top-level component	Implementation	Summary description
Web server	Web servers like Apache or Microsoft Internet Information Server	HTML and JavaScript graphical user interface for end-users to build and run population queries
Application server	Web services on JBoss WildFly	Set of services in XML SOAP format that provides the backend to the web client. These services provide user management, authentication, and translate the user queries for execution on the SQL database
Database	PostgreSQL, Oracle, or Microsoft SQL	The database contains patient data and the user data

Abbreviation: i2b2, Integrating Biology and the Bedside.