34.5. Key Ideas
The following key ideas will be explored in subsequent sections:
Mapping— There must be some mapping between a class and its persistent store (for example, a table in a database), and between object attributes and the fields (columns) in a record. That is, there must be a schema mapping between the two schemas.
Object identity— To easily relate records to objects, and to ensure there are no inappropriate duplicates, records and objects have a unique object identifier.
Database mapper— A Pure Fabrication database mapper is responsible for materialization and dematerialization.
Materialization and dematerialization— Materialization is the act of transforming a non-object representation of data (for example, records) from a persistent ...
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