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Prognos™ System Requirements
PureSafety's Prognos™ software is a 32-bit, ODBC compliant client/server application for managing safety, workers' compensation and disability information. The client component uses Microsoft Visual C++ and the server component is supported by Microsoft SQL Server database software.

Prognos™ communicates with its databases using the Open Database Connectivity standard (ODBC). The ODBC standard allows easy access to data for creating supplemental reports and queries using a wide variety of off-the-shelf report writers and data tools.

Prognos™ uses the Crystal Reports run-time report engine for internal reporting. All reports are stored within the database for easy management. Prognos™ is available with a Report Maintenance Utility for importing and managing custom reports within the Prognos™ database.

The Prognos™ security system controls access to electronic medical records and other sensitive information by creating User IDs and Passwords for authorized users. The security system provides the capability to create screen level, function level (insert, update, read-only, and delete), company level, and report level access definitions. Screen level security controls access to individual dialog boxes. Function level security controls what a user can do once a particular dialog box is displayed. Company level security controls access to claim information by company or work site. Report level security controls access to individual reports.

Prognos™ is a 32-bit application that operates on Windows 95 or later workstations. The following is a list of the minimum and optimal workstation requirements.

Network Server Requirements:
Prognos™ supports multi-user environments using Microsoft SQL Server 2000 database software. Microsoft SQL Server is a reliable database capable of supporting a large number of concurrent users, while ensuring a high degree of data integrity and security.

Microsoft SQL Server 2000 operates on Windows NT or later network servers, requires 100 megabytes to install, and a minimum of 64 megabytes RAM to operate. TCP/IP is the recommended network protocol. Actual disk storage and RAM required is dependent on the number of users requiring access and the number of records processed

Wide Area Network (WAN) Configurations
Prognos™ incorporates true 32-bit client/server architecture with a sophisticated security system making it ideal for enterprise-level WAN implementations. WAN-based Prognos™ implementations facilitate real-time data consolidation into a central database. In the employer environment, WAN-based implementations have proven particularly effective for larger organizations with facilities in diverse geographical locations. Centralized data consolidation provides individual locations with the ability to manage site-specific safety, workers' compensation, and disability programs, create compliance reports and run effective loss control and prevention programs, while giving division and corporate level users instant access to real-time reports containing information on all locations.

Traditional WAN configurations involve implementing the Prognos™ database software on a central server to store data and Prognos™ client software on individual workstations. Workstations are configured to record and retrieve information from the Prognos™ database server via the WAN. Prognos™ also supports "thin client" environments using Citrix and Terminal Server. Citrix/Terminal Server implementations are server-based configurations that maintain the Prognos™ client and server components on a central server(s) and provide Prognos™ user access through the Internet. The advantages of implementing Prognos™ in a Citrix-based environment include decreasing implementation costs, reducing bandwidth required to achieve acceptable performance levels, and decreasing ongoing support and maintenance costs.

Implementing Prognos™ in a WAN configuration requires a supporting communications infrastructure. We recommended a MINIMUM bandwidth of 128KB for traditional WAN based implementations and 56KB for Citrix/Terminal Server based implementations. In addition, it is important to consider that Prognos™ client performance in this environment can be adversely affected by non-Prognos™-related data transmissions on the WAN and by packet-level priority assignments.

All Prognos™ databases support Microsoft's Open Database Connectivity (ODBC) standard. If requested, PureSafety will provide a database schema to customers interested in developing independent data access tools for use within their organization.