Use ER-Assistant Program to Draw the ERD Diagrams

Draw an ERD to track lab tests performed by a medical laboratory on clients. The database should track basic client details including a unique client identifier, client name, client insurance provider (if any), client address, client date of birth, and client sex. The database should track the unique identifier for a lab test, the test type identifier, the date and time when the lab test was administered, and the identifier of the lab employee performing the test. A client can request multiple tests in a visit to the lab. The database only contains clients who have had lab tests performed. Each lab test is administered to one client.

Revise the ERD with more details about test types. A test type includes a unique test type identifier, a test type name, a test type cost, and a test type code. A lab test administered to a client is associated with one test type. A test type can be administered to multiple clients. A test type can exist in the database without ever being administered.

Revise the ERD with test type items. A test type item includes a unique test item identifier, a test item name, test item unit of measure, and a test item description. A test type includes one or more test items. A test item can be part of one or more test types.

Revise the ERD to include lab test results. Each administered lab test has a result for each item on the test type. A test item result includes a unique test item results identifier, the analysis date, the employee identifier of the lab technician measuring the result, the measured value of the test type item, and an optional description of the test items appearance. An administered lab test has one or more associated test item results although there are no associated results until lab analysis is complete. A test item can have many associated test item results. Test items never administered will not have any associated test item results