Parcial 2. Parte 2 Flashcards
Making decisions about the placement of data and programs across the sites of
a computer network as well as possibly designing the network itself.
Design problem
placement of the distributed DBMS software; and
placement of the applications that run on the database
DDBMS Design Problem
Level of sharing, Pattern behavior, Level of knowledge
Dimentions of the problem
No sharing, Data sharing, Data-plus program sharing
Level of sharing
Static, Dynamic
Pattern behavior
designers do not have any information, designers have complete information, designers have partial information
Level of knowleadge
Top-down, Bottom-up
approaches for developing any database
you start with a general idea of what is needed for
the system and then work your way down to the more specific details of
how the system will interact. ¡This process involves the identification of
different entity types and the definition of each entity’s attributes.
Top-Down
Requirement analysis, View design, Conceptual design
steps for a top-down