Abstract
In order to understand the design principles underlying this chapter, we have to recall two major decisions made in the context of the general reference architecture (cf. figure 2 in Chapter 2):
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object-orientation and hypermedia were defined as the two major software concepts on which a CAL2 system should be based;
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according to the object-oriented design philosophy, a small object-oriented nucleus should form the center of a CAL2 system, extended by orthogonal feature extensions, and accessed via generic tools by the users.
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Notes
See also Guided Tours [100], page 10.
An analogy to this sort of customization exists for formal languages in the form of syntax directed editors.
People who are familiar with planning systems may know that a backward analysis from the goal to its precondition works in a very similar way by looking only at the time constraints. The idea here is to incorporate all sorts of constraints.
This is, e.g., an option in the VMS operation system.
Each developer gets a copy of a revision and modifies his personal copy. Whenever modifications should be saved as a new revision, CVS tries to merge this modifications with the original revision.
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© 1995 Springer Science+Business Media Dordrecht
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Mühlhäuser, M., Schaper, J., Dürr, M., Lang, S. (1995). Base System and Hypermedia. In: Mühlhäuser, M. (eds) Cooperative Computer-Aided Authoring and Learning. Springer, Boston, MA. https://doi.org/10.1007/978-1-4615-2253-9_8
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DOI: https://doi.org/10.1007/978-1-4615-2253-9_8
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