Nothing close enough? Start from a blank erd → Describe it in one paragraph.
How to use an erd template.
- 01Identify core entities and relationships
List the main objects in your CRM—Tenant, User, Account, Contact, Lead, Deal—and how they relate (e.g., a Tenant has many Users, a User owns many Deals).
- 02Choose a tenant isolation model
Decide between a shared database with a TenantId column, separate schemas per tenant, or dedicated databases. Reflect the chosen strategy in the ER diagram by adding tenant-discriminant attributes.
- 03Add attributes and keys
Assign primary keys (UUIDs or auto-increment), foreign keys, and tenant-specific columns. Ensure every query filters by TenantId to enforce data isolation.
- 04Generate the diagram with AI
Use ChatDiagram's ER diagram tool: type a description like 'Design a multi-tenant CRM with tenants, users, contacts, and deals' and let the AI create the initial ERD.
- 05Validate and iterate
Review the generated diagram against your business requirements. Add missing fields, adjust relationships, and regenerate until the schema perfectly matches your use case.
Questions about erd templates
What is a multi-tenant CRM ER diagram?
It's a visual representation of the database schema for a CRM system that serves multiple tenants (organizations). It shows tables like Tenant, User, and Contact, and the relationships that keep each tenant's data separate.
How do I model tenant isolation in an ER diagram?
The most common approach is adding a 'tenant_id' foreign key to every table that holds tenant‑specific data. The diagram then clearly shows that the Tenant table is linked to all other entities, enforcing isolation at the schema level.
Can I customize these multi-tenant CRM ER diagram examples?
Absolutely. All gallery examples are editable using ChatDiagram's tool. You can open any example, add or remove entities, change relationships, and instantly generate a new diagram tailored to your project.
What are the essential entities in a multi-tenant CRM?
Typical entities include Tenant (organization), User (login account), Contact (person), Account (company), Lead, Opportunity, Deal, and Activity. The Tenant entity anchors the multi-tenancy structure, linking to all other tables.
Should I use separate tables for each tenant?
Not in a traditional multi-tenant design. Instead, you use a single set of tables with a discriminator column (tenant_id) to logically separate data. Separate tables per tenant would complicate maintenance and scaling; the ER diagram helps you see why the shared-table approach is cleaner.