Download here - Enterprise Integration & Modeling

Part 1
Introduction
1.1 Background and Problem Statement
In order to support the enterprise information systems integration and adaptiveness, major
efforts have been undertaken by the metadatabase research group at RPI (under direction by
Professor Cheng Hsu) in the past years and the accomplishments include (1) Two-Stage
Entity Relationship (TSER) modeling methodology; (2) Metadatabse model and
management system (including a rulebase model); (3) Global Query System (4) RuleOriented Programming Environment for supporting the execution of the global-rule among
heterogeneous, distributed systems([Hsu92], [Bouziane91], [Babin92], [Cheung91]).
The TSER modeling includes semantic level modeling(SER) and operational level modeling
(OER). The SER modeling is used for system analysis and high-level design and it has two
constructs, one is SUBJECT which contains data items , functional dependencies and intrasubject rules to serve as the functional units(or views) of information(data + knowledge);
the other is CONTEXT which contains the inter-subject rules to provide the control
knowledge among the related information units. The OER modeling is used for logical
database and rulebase design and it has four constructs which are Entity, Plural
Relationship(PR), Mandatory Relationship(MR), and Functional Relationship(FR) and
they can be mapped from the SER level([Hsu92],[Bouziane91]).
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