Suppose you have been hired as an IT professional to support database reporting functionality for a Human Resources system.  Compose at least two aggregate function queries that can be useful for the

Suppose you have been hired as an IT professional to support database reporting functionality for a Human Resources system.  Compose at least two aggregate function queries that can be useful for the executives of the organization to extract summary data from a database system.   Synthesize how aggregate functions help the organization understand employee performance. Provide an example that supports how the aggregate function is used to leverage talent within the organization.
Note: The Strayer Oracle Server may be used to test and compile the SQL Queries developed.