Q5-2 What is a database? Define the term database. Explain the hierarchy of data and name three elements of a database. Define metadata. Using the example of Student and Office_Visit tables, show how relationships among rows are represented in a database. Define the terms primary key, foreign key, and relational database. Student Table Student Number Student Name HW1 HW2 Mid Term 1325 BAKER, ANDREA 88 100 78 1644 LAU, SWEE 75 90 90 2881 NELSON, STUART 100 90 98 3007 FISCHER, MAYAN 95 100 74 3559 TAM, JEFFREY 100 88 1 4867 VERBERRA, ADAM 7090 92 5265 VALDEZ, MARIE 80 90 85 8009 ROGERS, SHELLY 95 100 98 Office_Visit Table VisitID Date Notes Student Number 2 1325 3 2/13/2020 Andrea had questions about using IS for raising barriers to entry. 2/17/2020 Jeffrey is considering an IS major. Wanted to talk about career opportunities. 2/17/2020 Will miss class Friday due to job conflict. 3559 4 4867