Abstract: A web server provided according to aspect of the present disclosure maintains registration data indicating the browsers to be notified upon occurrence of corresponding events. Upon receiving notification of occurrence of an event from an application server, the web server determines the set of browsers registered to receive notification of the occurrence of the event, and pushes the event to each of the set of browsers. By relying on a web server for such operation, each of the applications in the application server can be implemented as stateless applications, thereby providing advantages such as scalability and portability.

Abstract: A web server provided according to aspect of the present disclosure maintains registration data indicating the browsers to be notified upon occurrence of corresponding events. Upon receiving notification of occurrence of an event from an application server, the web server determines the set of browsers registered to receive notification of the occurrence of the event, and pushes the event to each of the set of browsers. By relying on a web server for such operation, each of the applications in the application server can be implemented as stateless applications, thereby providing advantages such as scalability and portability.

Abstract: An aspect of the present disclosure enables a user to specify a first pivot view as a publisher upon change of a criteria for selection of data points, and a second pivot view as a subscriber upon occurrence of the change. When an event representing a change of the criteria in the first view is detected, both the first view and the second view are updated reflecting the change in the selection criteria. According to another aspect of the present invention the formation of elements of a pivot view is based a GROUP BY and a ROLLUP construct. According to yet another aspect, a user can modify the axis for a pivot chart, and an updated chart, corresponding to the modified axis, is displayed.