CRM Contacts–Leads–Deals ERD: a clear, scalable model
This erd visualizes how Companies, Contacts, Leads, and Deals relate, including the many-to-many link between Contacts and Deals via Deal_Contact.
What This Template Offers
Jump-start your CRM data model with a proven ERD that maps core entities and constraints for fast, accurate implementation.
- Ready-to-use entities, keys, and types
- M:N Contacts–Deals via Deal_Contact
- Clear cardinalities and optionality
- Normalized, scalable structure (3NF-minded)
- Email uniqueness on Contacts, flexible on Leads
Perfect Use Cases
Implementing or replatforming a CRM
Use the ERD to align sales, ops, and engineering on entity definitions and relationships before you build—reducing rework and data drift.
Migrating spreadsheets to a proper database
Transform messy sheets into a clean schema. The model prevents duplicate contacts and enforces consistent company–lead–deal links.
Integrating marketing automation and analytics
Map lead sources, statuses, and deal stages to a stable structure that supports attribution, dashboards, and pipeline forecasting.
Designing a warehouse or reverse ETL model
Adopt a clear core model that downstream tools can trust, improving join logic, performance, and report accuracy.
How to Customize
Add or rename attributes
Include fields your team needs—e.g., lead_score, lifecycle_stage, or stage_change_date—while keeping keys and types consistent.
Refine constraints and cardinality
Set unique indexes (e.g., company name), make company_id optional on Leads and Deals, and confirm M:N Contacts–Deals via Deal_Contact.
Style and share
Adjust colors, fonts, and layout for clarity. Then download, share a link, or embed for instant team alignment.
Why Choose This erd Template
Key Benefits
Pro Tips
Create Your Own erd—fast and confidently
Turn your CRM schema into a clear, professional ER diagram in minutes. Edit, style, and share instantly—no design skills needed.
Create Your Own erd—fast and confidently
Turn your CRM schema into a clear, professional ER diagram in minutes. Edit, style, and share instantly—no design skills needed.
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