CLIENT
ClientID ClientName ClientAgent ClientSpouseName
C111 Tom A1 Jenny
C222 Karin A1 Bill
C333 Cole A2 Amy
C444 Dorothy A2 C555 Andy A3 Amy
C666 Tina A3 Matt
C777 Christina A4 Mike
AGENT
AgentID AgentName AgentArea AgentRating AgentYearOfHire SupervisedBy
A1 Kate 1 101 1990 A2 Amy 2 92 2009 A1
A3 Luke 3 100 1992 A4 James 3 90 2010 A3
AREA
AreaID AreaName AreaHQ
1 East Boston
2 West San Francisco
3 Central Chicago
This database will be used for the following question citing tables from the HAPPY INSURANCE database.
If a DBMS enforces a DELETE SET-TO-NULL option on the referential integrity constraint between CLIENT and AGENT in the HAPPY INSURANCE database, what will be the outcome after a user tries to delete the last record (A4, James, 3, 90, 2010, A3) from AGENT?
A. CLIENT will have 7 records
AGENT will have 4 records
B. CLIENT will have 6 records
AGENT will have 3 records
C CLIENT will have 7 records
AGENT will have 3 records
D. CLIENT will have 6 records
AGENT will have 4 records