Tuesday, August 21, 2012
Monday, July 23, 2012
- System-specific reference data and event data belonging to a transaction-update system
- Contain system control and detailed data used to run the day-to-day operations
- Data are up to date and data are modifiable
- Enterprise data
The inside-out database design approach can define as a special case of a bottom-up approach. This approach starts with the identification of set of major entities. Then after it spreading out to consider other entities, relationships and attributes associated with those first identifies. In this approach attention is focused at a central set of concepts that are most evident and then spreading outward by considering others in the vicinity of existing ones.
In top-down approach, it helpful to visualize the system. This visualization of the system use to represent the idea behind the particular system and this will really helpful to identify the system and understand the related system. That's why we can say that top down approach is a really good way for the representation.