A zoom user has a name, and a zoomid. Zoom users are unique by their zoomid. A zoom meeting has a meetingid, a passcode, meetingname, and number of attendees which can be calculated. Meetings are unique by meetingid Users attend zoom meetings. A user doesn't have to attend any zoom meeting, and may attend many. A zoom meeting doesn't have to have any attendees, but may have multiple people attending. Users also host a zoom meeting. A zoom meeting must have a user as the host, and it can only have one. A user may host multiple zoom meeting, or none. A calendar account has a calid, and a name. It is unique by calid. Calendar account is also unique by name A user can integrate to a calendar account. A user can integrate 0 or 1 calendar accounts, and a calendar account has to be integrated to a single user. Create the Chen ER Diagram A hospital wants to build a database for COVID testing. A patient has a first name, last name, address, gender, and patientid. They are unique by patientid. An address is composed of street, city, state and zip A test has a FDAid, a mfr, a mfrnumber, a description. It is unique by FDAid. It's also unique by the mfr and mfrnumber combined. This is not an individual test item, it is a brand. Tests also have ingredients, and can have multiple ingredients. A patient takes a covid test. A patient may have multiple covid tests done but must have at least one. A test can be administered to multiple people and can also be given to none. That relationship has a testdate, and a result. Create the Chen ER Diagram