Primary Keys

POCO DataSet supports optional primary keys to uniquely identify rows. Because the framework avoids implicit constraints or state tracking, primary keys are defined and interpreted by application logic rather than internal mechanisms.

Primary Key Characteristics

• Primary keys can consist of one or more columns.
• They are defined through metadata or explicit application logic.
• They are used for row identity, comparison, or linking.
• No automatic constraint enforcement is performed internally.

This flexible model allows developers to define only the identity rules they need without inheriting complexity.

Table of Content POCO DataSet Overview of Data Model