Normalization Model
The SA/Normalization method is based on the use of decomposition rules, which enable one to decompose tables/relations.
- Database design starts with flat tables/relations, each of which is created out of a data stores in the DFDs and then decomposed into the normal form relations. No conceptual schema of the enterprise is created to express the semantics of its information structure.
The SA/IA method is based on the use of grouping rules which map simple relationships in the binary-relationship data model onto normal form relationships.
- The relational model and the normalization method have been criticized for being too detailed to use at the initial design stage, and for lacking a semantic structure for making unambiguous choices in modeling the enterprise.
- The IA method incorporates a semantic model of the enterprise which captures its essential semantic features from which the normal form relations are derived.