
Although ORM models tend to consume more space than ER models, they typically
reveal more semantics, and you can use VEA to automatically transform ORM models
to compact, attribute-based models for relational implementation. For example, you can
use VEA to map the ORM schema in Figure 2–4 to the relational schema shown in
Figure 2–3. This forward engineering process is introduced in Chapter 3, and explained
in detail in Chapter 7.
2.4 The Database Life Cycle
VEA’s database modeling functions can help both individual database users and large
corporate development teams. Individual database users do their own business analysis
and database modeling. In ...