Entity-Relationship Diagram (ERD)

"Trade, also called goods exchange economy, is to transfer the ownership of goods from one person or entity to another by getting something in exchange from the buyer. Trade is sometimes loosely called commerce or financial transaction or barter. A network that allows trade is called a market. ...
Modern traders ... generally negotiate through a medium of exchange, such as money. As a result, buying can be separated from selling, or earning. ...
Retail trade consists of the sale of goods or merchandise from a very fixed location, such as a department store, boutique or kiosk, or by mail, in small or individual lots for direct consumption by the purchaser. Wholesale trade is defined as the sale of goods that are sold merchandise to retailers, to industrial, commercial, institutional, or other professional business users, or to other wholesalers and related subordinated services." [Trade. Wikipedia]
The deployment flow chart example "Trading process diagram" was created 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.

This interactive voice response (IVR) diagram sample illustrates the IVR services.
"IVR systems are typically intended to service high call volumes, reduce cost and improve the customer experience. Examples of typical IVR applications are telephone banking, televoting, and credit card services. ...
Voice-Activated Dialing
... (VAD) IVR systems are used to automate routine enquiries to switchboard or PABX (Private Automatic Branch eXchange) operators, and are used in many hospitals and large businesses to reduce the caller waiting time. ...
Entertainment and information.
Some of the largest installed IVR platforms are used for televoting on television game shows, ... which can generate enormous call spikes. Often, the network provider will have to deploy call gapping in the PSTN to prevent network overload. ...
Anonymous access.
IVR systems allow callers to obtain data relatively anonymously. Hospitals and clinics have used IVR systems to allow callers to receive anonymous access to test results. ...
Clinical trials.
IVR systems are used by pharmaceutical companies and contract research organizations to conduct clinical trials and manage the large volumes of data generated. ... Applications include patient randomization and drug supply management. ...
Outbound calling.
IVR systems can be used for outbound calls, as IVR systems are more intelligent than many predictive dialer systems, and can use Call Progress Detection to recognize different line conditions...
Other common IVR services include:
Mobile - Pay-As-You-Go account funding; registration; mobile purchases, such as ring tones and logos;
Banking - balance, payments, transfers, transaction history;
Retail & Entertainment - orders, bookings, credit & debit card payments;
Utilities - meter readings; account look-up, history and balance, payment, consumption history;
Travel — ticket booking, flight information, check-in;
Weather forecasts, water, road and ice conditions" [Interactive voice response. Wikipedia]
The IVR diagram example "IVR services" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Interactive Voice Response Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.