3. (30pts) Provide a Crow's Foot ERD given description. Companies identified by company id and company name hire consultants, identified by consultant id, consultant name, and consultant specialty, which is multi-valued. For example, a consultant Smith may specialize in system analysis and Soccer coaching. It is also known that in some specialties there may not be any consultant available and in others there may be more than one. Assume that a consultant can work for one company at a time, but we need to keep track of all the engagements of a consultant with companies, past and present. In addition to the above attributes, it is critical that we capture data for attributes such as hourly rate for each engagement and the number of hours. The rate a consultant charges varies from engagement to engagement. (20pts) a. In the following COURSE table, the attribute PREQUISITES is a multivalued attribute. A course may have zero or more prerequisites and the same course may be the prerequisite of zero or more other courses. Draw a Crow's Foot ERD to show your solution for a design that properly addresses this multi-valued attribute issue. b. Populate the resulting tables with the minimal number of rows so that the populated tables fully illustrate the different aspects of your design