The data warehousing project group has invited you to provide an overview of OLAP (Online Analytical Processing) and OLTP (Online Transaction Processing). Your job is to explain the main components of OLAP and OLTP by comparing and contrasting the differences between OLTP and OLAP. When is it appropriate to use each one of these? What are the circumstances of using ROLAP (Relational OLAP), MOLAP (Multidimensional OLAP), and HOLAP (Hybrid OLAP)? Provide real-world examples.