
Solution: (with a sample database to illustrate the steps)

Solution: (with a sample database to illsutrate the steps)

Solution:

Solution:
Note: the following construct is illegal in Relational Algebra
H1 = _{essn} ℱ _{count(dep_name)} (dependent) // H1 = ( essn, #dependentsofthisessn) H2 = ℱ _{max(count)} (H1) // H2 = (max)


Solution:

Solution:

Solution:

Solution: