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8.3.2
Reusing Database
In this case, a database exists in the company. The system developer is required to
build a new expert system to interface an existing DBMS to access the database.
The procedure is:
Step 1. Knowledge acquisition.
The system developer must perform the necessary knowledge acquisition.
The result will be the rules of the expert system. The system developers must
know the existing database structure, in order to understand what data exists to sup-
port the expert system.
Step 2. Create expert systems within the frame Frame model metadata.
The system developer implements the expert system within the frame model
metadata. The existing database will be used as “coupling classes.”
Step 3. Integrate database systems and expert systems within the Frame model
metadata.
The system developer will then integrate the existing database and the existing
expert system within the Frame model metadata.
Step 4. Develop new applications using the EDS.
With the EDS, system developer can apply the rules from the source ES, using
the data from the source DBS, and develop a knowledge-based system.
8.3.3
Integrate Database System and Expert System
In this case, a database system and an expert system already exist in the company.
The system developer is required to build a communication channel between these
two systems. The usual method to build this integrated system requires changes to
some parts of the existing systems. The data can be passed into the existing system
by the system I/O stream. The procedure is as follows:
Step 1. Knowledge acquisition.
The system developer must perform the necessary knowledge acquisition. The
acquisition processing will focus on what is needed for the integration of the two
existing systems. The knowledge acquisition will define what data will be inte-
grated between the two systems.
Step 2. Create coupling classes.
The database system and the expert system will be coupled within the frame
model metadata as two separate coupling classes.
Step 3. Integrate database systems and expert systems.
The system developer will then integrate these two subsystems into a system
within the frame model metadata.
Step 4. Application development using the EDS.
The source ES and the source DBS can be integrated into an EDS, which trans-
form the input information into knowledge by developing a knowledge-based sys-
tem, i.e., applying ES rules and extract data from a DBS.
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