Lean production systems are sometimes referred to as pull systems because demand from customers activates the production actions of the manufacturing facilities. in order for this demand to be communicated to everyone in the supply chain/manufacturing facility a signal must be passed from downstream processing centers to the upstream processing centers. this system of relaying signals is referred to as a:

Kanban Pull System

Explanation:

Kanban is by far the most commonly used framework for the Pull System. It's mainly due to its ease of use and overall effectiveness in producing results.

While it was initially used in the production industry, companies and groups from a variety of industries are now using Kanban.

i have learnt about the business report to determine the database requirements.

(because i need 20 chars)