2.0 KiB
2.0 KiB
001. Database Design Constraints
Date: 2025-12-18 Status: Accepted
Context
The database schema and relationship design for the CLQMS system were established by management and external stakeholders. The backend engineering team was brought in after the core data structure was finalized.
The development team has identified potential challenges regarding:
- Normalization levels in specific tables.
- Naming conventions differ from standard framework defaults.
- Specific relationship structures that may impact query performance or data integrity.
Decision
The backend team will implement the application logic based on the provided database schema. Significant structural changes to the database (refactoring tables, altering core relationships) are out of scope for the current development phase unless explicitly approved by management.
The team will:
- Map application entities to the existing table structures.
- Handle necessary data integrity and consistency checks within the Application Layer (Models/Services) where the database constraints are insufficient.
- Document any workarounds required to bridge the gap between the schema and the application framework (CodeIgniter 4).
Consequences
Positive
- Development can proceed immediately without spending time on database redesign discussions.
- Alignment with the manager's initial vision and requirements.
Negative
- Technical Debt: Potential accumulation of "glue code" to make modern framework features work with the non-standard schema.
- Maintainability: Future developers may find the data model unintuitive if it deviates significantly from standard practices.
- Performance: Sub-optimal schema designs may require complex queries or application-side processing that impacts performance at scale.
- Responsibility: The backend team explicitly notes that issues arising directly from the inherent database structure (e.g., anomalies, scaling bottlenecks related to schema) are consequences of this design constraint.