生意行为
发表于 2025-3-25 06:08:05
http://reply.papertrans.cn/47/4656/465520/465520_21.png
禁止
发表于 2025-3-25 09:31:20
http://reply.papertrans.cn/47/4656/465520/465520_22.png
祖传
发表于 2025-3-25 15:24:07
http://reply.papertrans.cn/47/4656/465520/465520_23.png
galley
发表于 2025-3-25 18:29:53
http://reply.papertrans.cn/47/4656/465520/465520_24.png
mastopexy
发表于 2025-3-25 22:16:07
Schema Translation,of data and their relationship in different models. Only after a schema has been redefined can data and programs then be reengineered into a new database system, which makes use of the translated schema. Schema translation is the process of changing a schema expressed in one data model into an equivalent schema expressed in a different data model.
交响乐
发表于 2025-3-26 02:27:14
Schemas Integration,of converting companies’ hierarchical or network databases to RDB and XML. To meet users’ requirements, there is a need to support various data models in a single platform. However, due to the implied constraints of the various data models, it is difficult for organizations to support heterogeneous database systems.
苦涩
发表于 2025-3-26 07:58:19
Database and Expert Systems Integration,es, and databases). However, knowledge-based systems have also been developed within these organizations and are growing in popularity. It will soon be necessary for us not only to reuse existing databases but also to reuse the existing expert systems to create new expert systems and expert database systems.
MILL
发表于 2025-3-26 11:37:37
Conclusion,ise, companies choose to redevelop rather than reengineer when upgrading their information systems. The purpose of this book is to convince these companies that reengineering is a more cost-effective and feasible solution.
SPALL
发表于 2025-3-26 15:09:48
Textbook 2021Latest edition has evolved from file systems in the 60’s, to Hierarchical and Network databases in the 70’s, to relational databases in the 80’s, object-oriented databases in the 90’s, and to XML documents and NoSQL today. As a result, there is a need to reengineer and update old databases into new databases. Thi
abysmal
发表于 2025-3-26 19:17:54
ctivity.Provides an accompanying forum where readers can ask.Database technology is an important subject in Computer Science. Every large company and nation needs a database to store information. The technology has evolved from file systems in the 60’s, to Hierarchical and Network databases in the 7