Suppose that in some database of people and their heights we count a person’s height as 1 unit of information. How much information is contained in the average of the heights of all the people in the database?

How many rows does the resultant of the relational algebra expression acqcost>1500 (Tdesc,acqcost (A)) have, given the table A below? id 82943 Conference Table 77463 Conference Chair 99821 Desk 44320 Desk 99873 Conference Chair 77472 Conference Chair 88872 Speaker Phone 33411 Monitor 55" 98006 Printer 88753 Copier 72633 Chair 99098 Conference Chair desc acqcost 4998.00 247.45 1987.00 2019-09-15 1987.00 2017-11-05 247.45 2019-09-15 2019-09-15 247.45 247.00 2020-06-23 874.00 2018-03-08 1389.00 2019-12-18 4877.90 2017-12-01 642.00 2017-11-05 239.90 2020-02-10 dateacq 2019-09-15 2019-09-15

4. Find all instructors in Finance department who have taught some course in 2008. 5. Find all students from Physics department who took course 'CS-319'.

Write an SQL query to fetch the different projects available from the EmployeeSalary table.