HAPPY INSURANCE

Observe the HAPPY INSURANCE DATABASE:
CLIENT AGENT

question 46

Multiple Choice

HAPPY INSURANCE

Observe the HAPPY INSURANCE DATABASE:
CLIENT
$$\begin{array} { l l c l } \text { ClientID } & \text { ClientName } & \text { CientAgent } & \text { ClientSpouseName } \\\text { C111 } & \text { Tom } & \text { A1 } & \text { Jenny } \\\text { C222 } & \text { Kain } & A 1 & \text { Bill } \\\text { C333 } & \text { Cole } & A 2 & \text { Amy } \\\text { C444 } & \text { Dorothy } & A 2 & \\\text { C555 } & \text { Anay } & A 3 & \text { Amy } \\\text { C666 } & \text { Tina } & A 3 & \text { Matt } \\\text { C777 } & \text { Christina } & A 4 & \text { Mike }\end{array}$$ AGENT
$$\begin{array} { l l l l l c } \text { AgentID } & \text { AgentName } & \text { AgentArea } & \text { AgentRating } & \text { AgentYearofHire } & \text { SupervisedBy } \\\text { A1 } & \text { Kate } & 1 & 101 & 1990 & \\\text { A2 } & \text { Amy } & 2 & 92 & 2009 & \text { Al } \\\text { A3 } & \text { Luke } & 3 & 100 & 1992 & \\\text { A4 } & \text { James } & 3 & 90 & 2010 & \text { A3 }\end{array}$$ AREA
$$\begin{array} { l l l } \text { ArealD } & \text { AreaName } & \text { AreaHQ } \\1 & \text { East } & \text { Boston } \\2 & \text { West } & \text { San Francisco } \\3 & \text { Central } & \text { Chicago }\end{array}$$

This database will be used for the following questions citing tables from the HAPPY INSURANCE database.
-If a DBMS enforces an UPDATE CASCADE 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 change the AgentID value in the last record to A5?

• A)Value A4 appears once in column AgentID in AGENT,and value A4 appears once in column ClientAgent in table CLIENT
• B)Value A5 appears once in column AgentID in AGENT,and value A5 appears once in column ClientAgent in table CLIENT
• C)Value A5 appears once in column AgentID in AGENT,and value A5 does not appear in column ClientAgent in table CLIENT
• D)Value A5 does not appear in column AgentID in AGENT,and value A5 appears once in column ClientAgent in table CLIENT

---

Definitions:

Karyotype

The number and appearance of chromosomes in the nucleus of a eukaryotic cell. The term is also used for the complete set of chromosomes in a species or an individual organism.

Chromosome Number

The total count of chromosomes in a cell, specific to each species and crucial for genetic information.

Autosomal Trisomies

Genetic disorders resulting from the presence of an extra chromosome in one of the autosomal pairs, such as Down syndrome (Trisomy 21).

Gene-poor Chromosomes

Chromosomes that contain fewer genes compared to others, often associated with large regions of noncoding DNA.