| User Interface |  |
Business Logic | |
Database |
|---|---|---|---|---|
|
• html (browser-specific) • client-side scripts • Java and Active X • Plug-ins • Frames • Images • Encryption • Connection "state" • Presentation only |
|
• Server-side languages • Object tools and libraries • Data interchange standards (XML, HL7) |
|
• database server • connectivity middleware |