S&P Global Software Developer interview questions

Describe the architecture of a platform for buying and selling stocks while considering object-oriented programming (OOP) principles. After this, you will be asked technical questions about how various stock trading operations are performed. For example: * How can a broker retrieve the lowest selling price for a specific stock in the shortest possible time? * How can we ensure that the same offer from a seller at a specific price is not accepted by two different buyers?

About DB Context and sessions.