Identify one benefit and one drawback of each concurrency control strategy in an OLTP application and explain. Identify one benefit and one drawback of each concurrency control strategy in a data warehouse and explain. Suggest a scenario for a hypothetical OLTP business system where optimistic concurrency control is most appropriate and another scenario where pessimistic concurrency control is most appropriate. How would the type of user, such as a computer program, an internal business user, or a customer on the web, affect your choices?