scholarly journals A rule repository for active database systems

2007 ◽  
Vol 10 (2) ◽  
Author(s):  
Sidney Viana ◽  
Jorge Rady De Almeida Junior ◽  
Judith Pavón
Keyword(s):  
Database Systems ◽  
Active Database ◽  
Active Rules ◽  
Meta Model ◽  
Existing Structures ◽  
Business Applications ◽  
Current Business

Active Database Systems (ADBSs) provides a good infrastructure to define and execute active rules. Nevertheless, this infrastructure offered by ADBSs does not completely satisfy the necessities of rules management that demands current business applications. Rules also need to be stored in appropriate structures to facilitate their management, as the existing structures for data in these systems. This work proposes a rule repository, composed by structures that allow the storage and organization of rules, in order to facilitate their management. For this purpose, a rule classification with the main rule types existing in the literature is presented, and then, it represents the characteristics and anatomy of each type in a meta-model, with the goal of analyzing the data that must be stored about rules. The rule repository, proposed in this paper, has been built based on this meta-model.

CODAR

2003 ◽  
pp. 266-297
Author(s):  
Zahir Tari ◽  
Abdelkamel Tari ◽  
Surya Setiawan
Keyword(s):  
Business Processes ◽  
Database Systems ◽  
Complex Problem ◽  
Heterogeneous Databases ◽  
Business Organizations ◽  
Data Repositories ◽  
Web Based ◽  
Business Applications ◽  
Core Elements ◽  
New Generation

Connecting heterogeneous databases through the World Wide Web (WWW) is crucial for most business organizations. The underlying complex problem is the handling of heterogeneity and communication between different data repositories (or database systems). Such interoperability is crucial as it enables the integration of business processes across different business organizations, and therefore becomes a key issue within the new generation of Web-based business applications (called Web Services). CORBA (Common Object Request Broker Architecture) provides protocols and components that allow interoperability between different software platforms (Tari & Bukhres, 2001), such as C++ and Java. However, CORBA does not deal with WWW-based interoperability. In this paper we propose an extension of one of the core elements of CORBA, called Portable Object Adapter (POA), to deal with persistency of business information. The proposed extension, called CODAR, manages the whole life cycle of persistent objects, including activation, deactivation, instantiation, and deletion. At the end of this paper we describe an extension of CODAR to deal with performance by including advanced caching and prefetching techniques.

Databases Modeling of Engineering Information

2009 ◽  
pp. 338-361
Author(s):  
Z. M. Ma
Keyword(s):  
Data Storage ◽  
Database Systems ◽  
Data Models ◽  
Information Modeling ◽  
Database Modeling ◽  
Business Applications ◽  
Database Models ◽  
Engineering Information ◽  
Computer Based ◽  
Conceptual Data

Information systems have become the nerve center of current computer-based engineering applications, which hereby put the requirements on engineering information modeling. Databases are designed to support data storage, processing, and retrieval activities related to data management, and database systems are the key to implementing engineering information modeling. It should be noted that, however, the current mainstream databases are mainly used for business applications. Some new engineering requirements challenge today’s database technologies and promote their evolvement. Database modeling can be classified into two levels: conceptual data modeling and logical database modeling. In this chapter, we try to identify the requirements for engineering information modeling and then investigate the satisfactions of current database models to these requirements at two levels: conceptual data models and logical database models. In addition, the relationships among the conceptual data models and the logical database models for engineering information modeling are presented in the chapter viewed from database conceptual design.

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