Characteristics of application
Applications are:
- Workflow solutions
- Enterprise solutions
- Customer Relationship solution
Customers => Sever => Database
Traditional Client / Server Environment(linked by a network using protocol such as Microsoft Network)
Strength(Application run on Local Area Environment)
- high network speed as compared to over the Internet
- easy of ensuring security
- consistent UI using Windows
- well controlled/consistent client platform
- good control of starting and ending of application (session management)
Weakness
- Specific client software required on each Individual terminal(difficult in implementation and maintenance)
Web-based Client / Server Environment(linked by a network using Internet protocol - TCP/IP)
Strength
- application running on standard Intranet/Internet protocol(TCP/IP)
- easy implementation and maintenance
- consistent UI on different platforms(browser UI)
Weakness
- lower network speed as compared to LAN
- difficult to ensure security(over public switching telephone network)
Internet Protocol
TCP: Transmission Control Protocol
IP: Internet Protocol
HTTP: HyperText Transport Protocol
HTTPS: HyperText Transport Protocol Secure
Cookie Format(Write onto client machine):
Set-Cookie: NAME=VALUE; expired=DATE; path=PATH; domain=DOMAIN_NAME; secure
- expires syntax must be "Weekday, dd-mmm-yyyy hh:mm:ss GMT"
- domain must have at least 2 dots(3 dots for domains outside USA)
- path refers to a URL path within the Web server
- secure, if present, limits transmission to secure server
Internet
Plug-ins: are programs modules loaded by the browser to handle specific file-formats.
Internet application and Intranet application
Empowering the Client
Scripting (no compilation needed)
JavaScript (Netscape) - supported by almost every browsers, such as IE, Netscape, etc
VBScript (Microsystem)
Components (compilation needed) - IE
Java Applet (Sun Microsystem)
ActiveX Control (Microsoft)
No comments:
Post a Comment