schema-design

Designing a relational database schema involves mapping domain entities to tables with clear primary keys and appropriate foreign keys. You then apply 1NF, 2NF, and 3NF normalization rules while documenting justified denormalization for performance.

Planning a multi-tenant relational schema requires incorporating cross-cutting concerns directly into your entity mapping. You establish tenant isolation strategies and foreign key relationships to support multi-tenancy alongside audit history considerations.

Applying normalization rules involves structuring tables to satisfy 1NF, 2NF, and 3NF standards to eliminate data anomalies. You handle denormalization trade-offs by documenting specific cases where you intentionally violate normalization for query performance.

Adding audit history to a database schema requires planning temporal and history support during the initial entity mapping phase. You structure your tables and foreign keys to track historical data changes and support cross-cutting audit requirements.

You should use denormalization in a relational schema design when query performance demands it, but the choice must be a justified trade-off. You document the specific reasons for violating normalization rules to ensure maintenance clarity.