HAPPY INSURANCE
Observe the HAPPY INSURANCE DATABASE:
CLIENT AGENT AREA

question 47

Essay

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
$$\begin{array} { l l l l l l } \text { AgentID } & \text { AgentName } & \text { AgentArea } & \text { AgentRating } & \text { AgentYearOfHire } & \text { SupervisedBy } \\\text { A1 } & \text { Kate } & 1 & 101 & 1990 & \\\text { A2 } & \text { Amy } & 2 & 92 & 2009 & \text { A1 } \\\text { A3 } & \text { Luke } & 3 & 100 & 1992 & \\\text { A4 } & \text { James } & 3 & 90 & 2010 & \text { A3 }\end{array}$$ 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.
-Show the CREATE TABLE statements for HAPPY INSURANCE database for the table CLIENT (assume that non-primary key columns can be optional)with the DELETE SET-TO-NULL and UPDATE CASCADE option for its referential integrity constraint.

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Definitions:

Average Total Cost

The total cost of production divided by the quantity produced, including both fixed and variable costs, representing the per unit cost of production.

Output

Output is the total amount of goods or services produced by a company, industry, or economy within a certain period.

Total Cost

The complete cost of production that combines all costs, both fixed and variable, incurred to produce goods or services.

Change

The act or process of becoming different, which can apply to a wide variety of contexts, including physical alterations, shifts in ideas, or modifications in systems.