CRM "Customer Relationship Management". So, managing all the interactions between a company and its existing or potential customers.
CRM is a software that stores all customer data and interactions, facilitates tracking activities, aggregates contacts, creates reports, sends emails, and automates business processes.
The goal of CRM is to keep relationships with customers by offering tailored reactions.  
The important points of a CRM project are :
Here is an example of a CRM Database model, this ER diagram below is done with the ERBuilder data modeler.
The documentation of this CRM database is presented here. This documentation is generated by ERBuilder modeling tool. The project file can be downloaded here.
ERBuilder is a GUI data modeling tool that allows you to visualize, design and model databases by using entity relationship diagrams and automatically generates the most popular SQL databases. Generate and share the data Model documentation with your team. Optimize your data model by using advanced features such as test data generation, schema compare and schema synchronization. Try now ERBuilder for 15 days FREE
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