Information Technology Reference
In-Depth Information
Enhanced DBS
.
Embedd systems
.
Filtered system
.
Interacted systems
Extending
Existing
Systems
Evolutionary
Approach
Enhanced ES
-Internal enhancement
-External enhancement
.
Looselycoupled systems
.
Tightlycoupledsystems
Peer-to-Peer
coupling EDS
Building EDSs
Viacommondatachannels
Knowledge-Based
Schemas
Revolutionary
Approach
Building aTrue
KBMS
-Semantic data models
-Object-oriented databases
LogicFoundations
-Logic databases
Fig. 1.6
EDS typology
1.5
Conclusion
Chapter 10 concludes with a discussion of a suggested overarching framework for
future information system reengineering. Initially it discusses the application of
database conversion methodologies. It then describes the concepts of the multiple
databases integration, and also the database system and ES integration application,
and data normalization. The final part of this chapter explores the issues of the fu-
ture trends for information systems reengineering, integration, and normalization.
1.5.1
User Interface to Knowledge-Based Systems
To recover the advance semantics such as generalization, categorization, and n-ary
relationship from the relational schema, user input is needed during the process of
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