Application screens get most of the attention in planning meetings, but the database shape determines whether reporting is trustworthy, integrations remain stable, and future modules can be added without rewriting core logic.
Start from entities and relationships
Identify core entities such as customers, orders, jobs, assets, invoices, and users. Define how they relate and which records must never be orphaned. Business rules like status transitions and approval chains should be visible in the model early.
Avoid storing the same fact in multiple places without a clear master record. Redundant data creates reconciliation work later.
Plan for reporting early
Managers will ask for summaries, exports, and dashboards. If reporting is treated as an afterthought, developers end up scraping UI tables or building fragile queries across poorly related tables.
Decide which metrics matter at launch and which can wait. That helps design indexes, views, and data history correctly from the start.
Migration and growth
Existing businesses often launch new software beside legacy data. Migration planning should include cleanup rules, duplicate handling, and a rollback strategy.
A well-designed schema makes phased delivery easier because new modules can attach to shared entities instead of inventing parallel structures.