What is conceptual model and for the following database: employee are working in a project they are divided into manager and chief managers manager works in team and chief manager manages at least one team each team works on one project  general information :id of employee name and  manager additional attribute ie position and skill chief manager additional attribute is a product type team attributes team id , team name and team start date one of manager is also team leader  project attribute project id , project name, start date and end date hours work between project, manager and it is a number of hours a manager sent working on project general.