Hi, Rainbow,
In one line, we could say that Customer Relationship Management (CRM) is to the front office what Enterprise Resource Planning (ERP) is to the back office. Both complement each other. For a more detailed insight, let's examine the business needs that CRM and ERP fulfill.
CRM consists of Technology-Assisted Selling (TAS), customer support - a combination of customer service and field service. While CRM integrates your front office, sales, marketing, and customer service, ERP basically concentrates on integrating manufacturing and financial departments.
In simple terms, adopting a CRM approach enables you to keep track of changing customer expectations and to give them prompt, responsive, and individualized service in a cost-effective manner. It gives you complete knowledge about the customer, the ability to monitor the customer's response, and to analyze your products and strategies accordingly. You can then pre-empt customer behavior.
ERP helps you capitalize on this prior customer knowledge gained through CRM to quickly change manufacturing and financial strategies to produce new products in a cost-effective manner. From thereon, CRM takes over from lead qualification to building an ongoing and strong relationship.
For your information, I am including 2 files on HRM-ERP Software and the ERP system implementation. These are basically course contents with brief descriptions offered by 3D Educators, Karachi, Pakistan. I hope this could help you understand what it takes to become an ERP professional.
Have a nice day :)