Technology Continuum

Options for technical architectures can be mapped along a continuum, ranging from "low tech" to "high tech" solutions:

Different solutions are appropriate for different components of the architecture, particularly those involved in data capture versus data access. Mixing and matching components from along this continuum must be done prudently when assembling an optimal architectural solution.

Online Web Application

Data entry and/or data query are performed through an application ("thin client") accessed through a standard web browser.

Strengths		Weaknesses
• data remains on a central server and is current whenever users are accessing • "thin" client – little desktop support beyond browser and necessary "plug-ins" • GUI • many users already using Web browsers for other purposes • cross platform support easier (if application designed carefully) • good possibilities for integration of multi-media elements into an application, including educational material and resources out on the Web		• application development tools immature but getting better – difficult to select in an expanding marketplace • performance likely not be as good as other options • requires a robust TCP/IP network to function properly • printer support may be difficult for some kinds of web pages • may be difficult to maintain "state" (i.e., sense of a continuing browser to server session) • three tier architecture (browser, web/application server, data server) may be difficult to develop and support – requires more robust data and application servers than may be currently deployed