Client Access

• See Green Screen
• This is a GUI (Graphical User Interface} for using Microsoft Windows to access AS/400.
• IBM frequently made improvements in this interface, and changed the name to reflect the new and imporved reality.
  • This happened so often that people could get lost figuring out what is now the official name.
  • Before Client Access there was PC whatever.
  • After Client Access there was iSeries Access.

What is Client Access Infrastructure ?

This is a set of principles, guidelines, and rules used by an organization to direct the process of acquiring, building, modifying and interfacing with IT resources throughout the enterprise.

The resources can include:

• Equipment
• Software
• Communications protocols
• Application development
• Methodology
• Data base systems
• Shared pool of documentation
• Security
• IT Organizational structure
• IT professional skills
• Help Desk services

What is Client / Server ?

Client / Server computing is the splitting of an application into tasks that are performed on separate computers, one of which is a programmable workstation.

• Client is the computing resource that is USING some resource provided by a Server.
• Server is the computing resource that is PROVIDING some resource to Clients.
• There can be a linkage or hierarchy of multiple Clients of Servers, in which the Clients are in turn Servers to other Clients.

Client/Server Computing is NOT

• It is NOT some specific software.
• It is NOT some specific hardware.
• It is NOT a solution for all applications.