Introduction

@PROMIS is the graphical user interface providing all operator functions to PROMIS. The PROMIS system can be either OpenVMS or HP-UX.

@PROMIS provides the graphical user interface to access PROMIS without message bus.
The server is running on network web server, providing a centralization of all @PROMIS codes, without worrying of code distribution, and hardware upgrade of client machine. @PROMIS requires TCP/IP network connection to PROMIS. So, no new additional investment is required in order to use the software.

Architecture

Data consistency

@PROMIS does not require any local data cache or storage. The functions simply retrieve the information from PROMIS at the time of invocation. Since the software does not introduce overhead in PROMIS, the data retrieval will be performed in a shorter time.

Since all the codes are centralized in a network server, no software distribution is required for @PROMIS. User just simply access the GUI from IE Browser to invoke the @PROMIS.

rmance

The performance of the transaction depends on the following:

@PROMIS HTTP Server – the number of instance of @PROMIS HTTP Server can be configurable, in order to perform load balancing of @PROMIS software, i.e. scalability
Intranet network between client PC and PROMIS Adapter – it is the data transfer of the User Interface codes from server to client.

Scalability and Avalibility

The following factors are taken into consideration:

Hardware – more than one machine of the network server can be run at the same time, like a redundant server setup for a normal network server
@PROMIS – the @PROMIS can run in a redundant network server machine, i.e. more than one copy of @PROMIS running in the intranet network.

Recovery

Since the software is installed in network server only, the recovery procedure will be simplified, and easily tracked in the centralized server. The software does not have any local storage, so there is no concern of data inconsistency. Either @PROMIS PROMIS Adapter or HTTP Server can be re-started independently, without interrupting on client workstation or network server.