Database Reference
In-Depth Information
•
An itemized specification of indexes to be defined (starting with
the primary key) is provided for each object type (or entity).
•
Each operation to be defined on an object type (or entity) will be
given a descriptive name and an implementation name, indicated
in square brackets.
Figure 5-13.
O/ESG Conventions
Figure
5-14
provides an illustration of O/ESG for four of the object types (or entities)
that would comprise the manufacturing firm's database of earlier discussion (review
Figure
5-7
). In actuality, there would be one for each object type (or entity) comprising
the system.
Figure 5-14.
Partial O/ESG for Manufacturing Environment
