By Oliver Sims
An cutting edge examine how companies can reap the benefits of utilizing object-orientation to client/server structures. in addition to targeting the production of software program within the kind of CBOs, the ebook truly explains the permitting layer of "middleware" important among the working method and functions.
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Extra resources for Business Objects: Delivering Cooperative Objects for Client-Server (IBM McGraw-Hill Series)
4. Now these objects need to talk to one another. For this, they use messages. Since the objects are produced as independent executables, the messaging mechanisms must be external to the objects, and this in turn points to the need for some form of run-time layer of middleware infrastructure software. This message externalization is a major difference between these objects and the sort found in OOPLs. Of course, the infrastructure is the 64,000 dollar question. But if there were such an infrastructure, then the difficulties referred to above could be handled by that infrastructure.
For all we have done is to look at how the new technology could be used for a standard application such as Order Entry. What we have effectively done so far has been little more than transferring our unconscious knowledge of what an application is, to the new technology. In the early days of the character-based terminal, some IS departments saw it as a kind of superior cardpunch, which would save money on cardboard (punch cards). They actually put card images on the screen. What we have done in our example is the 1990s equivalent of putting card images on a screen.
If a job is incomplete (say at end of day) then it can be filed away to be opened and worked on the next day. 6, there were initially four steps in the procedure. In the course of filling the order, an exception condition was triggered (above credit limit). The system can automatically insert an additional step into the procedure (in this case, ‘Contact Manager’). Indeed, a major application of expert systems to business processes will probably be in the area of guiding people through complex administrative and clerical procedures.
Business Objects: Delivering Cooperative Objects for Client-Server (IBM McGraw-Hill Series) by Oliver Sims