Entity-Relationship Diagram (ERD)

"Business process mapping refers to activities involved in defining what a business entity does, who is responsible, to what standard a business process should be completed, and how the success of a business process can be determined.
The main purpose behind business process mapping is to assist organizations in becoming more efficient. A clear and detailed business process map or diagram allows outside firms to come in and look at whether or not improvements can be made to the current process.
Business process mapping takes a specific objective and helps to measure and compare that objective alongside the entire organization's objectives to make sure that all processes are aligned with the company's values and capabilities.
ISO 9001 requires a business entity to follow a process approach when managing its business, and to this end creating business process maps will assist. The entity can then work towards ensuring its processes are effective (the right process is followed the first time), and efficient (continually improved to ensure processes use the smallest amount of resources)." [Business process mapping. Wikipedia]
The swim lane process map example "Payroll process" was drawn using the ConceptDraw PRO diagramming and vector drawing software extended with the Cross-Functional Flowcharts solution from the Business Processes area of ConceptDraw Solution Park.