Français
3. Distributed database design
The existence of RDBMSs, no matter how sophisticated, does not exempt the user (the data administrator) from designing the RDB, i.e. defining the structure of the database and the operations applicable to it. The design problem differs, however, depending on whether an RDB is created from scratch (top-down approach) or by aggregating existing databases (bottom-up approach).
3.1 Top-down approach
At the conceptual and external levels, the RDB is perceived as a centralized database; classic design processes for centralized databases therefore apply to the global external and global conceptual levels.
The difficulty therefore lies in the global internal level where, considering the RDB as a set of relations, we specify :
- ...
The Ultimate Scientific and Technical Reference
This article is included in
Software technologies and System architectures
This offer includes:
Knowledge Base
Updated and enriched with articles validated by our scientific committees
Services
A set of exclusive tools to complement the resources
Practical Path
Operational and didactic, to guarantee the acquisition of transversal skills
Doc & Quiz
Interactive articles with quizzes, for constructive reading
Distributed database design
Query processing
References
The Ultimate Scientific and Technical Reference
