Complete this week's critical thinking activity:$1)$ Check the information of the MIMIC$-$IV public database.Links to an external site. patientLinks to an external site.ED vistLinks to an external site.diagnosis Links to an external site.triage Links to an external site.Based on your understanding of emergency visit routine, summarize the business rules based on your experience. $2)$ draw a conceptual model for these databases. $3)$ Draw the ER model based on the conceptual model. You have to include the attributes of each entity and possible relationships between entities. In each table, you have to identify the primary key and foreign keys.