Figuer:
CUSTOMER (Primary Key = CID) RENTALS (Primary Key = RTN)

question 7

Multiple Choice

Figuer:
CUSTOMER (primary key = CID) $\begin{array}{|l|l|l|l|l|}\hline \text { CID } & \text { CNAME } & \text { AGE } & \text { RESID\_CITY } & \text { Cregion } \\\hline 10 & \text { BLACK } & 40 & \text { SD } & \text { SD } \\\hline 20 & \text { GREEN } & 25 & \text { SD } & \text { SD } \\\hline 30 & \text { JONES } & 30 & \text { La Mesa } & \text { SD } \\\hline 40 & \text { MARTIN } & 35 & \text { LA } & \text { LA } \\\hline 50 & \text { SIMON } & 22 & \text { Pomona } & \text { LA } \\\hline 60 & \text { VERNON } & 60 & \text { Poway } & \text { SD } \\\hline\end{array}$ RENTALS (primary key = RTN) $$\begin{array} { | l | l | l | l | l | l | l | l | } \hline \text { CID } & \text { MAKE } & \text { DATE\_OUT } & \text { PICKUP } & \text { RETURN } & \text { RTN } & \text { VIN } & \text { DATE-IN } \\\hline 10 & \text { FORD } & \text { 10-Oct-00 } & \text { SD } & \text { SD } & 1 & \text { F1 } & \text { 01-Dec-00 } \\\hline 10 & \text { GM } & 01 - \text { Jan-01 } & \text { SD } & \text { LA } & 2 & & \\\hline 10 & \text { FORD } & 01 - \text { Feb-01 } & \text { LA } & \text { SD } & 3 & & \\\hline 20 & \text { NISSAN } & 07 - J u l - 00 & \text { SD } & & 4 & \text { N1 } & \\\hline 30 & \text { FORD } & 01 - J u l - 00 & \text { SD } & \text { SD } & 5 & \text { F2 } & 30 \text {-Nov-00 } \\\hline 30 & \text { GM } & 01 - \text {-Dec-00 } & \text { SD } & \text { SD } & 6 & \text { G1 } & \\\hline 40 & \text { FORD } & 01 - \text { Aug-00 } & \text { LA } & \text { LA } & 7 & \text { F3 } & \\\hline 50 & \text { GM } & 01 - \text { Sep-00 } & \text { LA } & \text { SD } & 8 & \text { G2 } & \\\hline 60 & \text { NISSAN } & 02 \text {-Jan-01 } & \text { SD } & \text { LA } & 9 & & \\\hline\end{array}$$ In the table RENTALS, RTN provides the rental number (it is the primary key) , CID refers to the CID in CUSTOMER, PICKUP is the city where the car was (or will be) picked up and Return is the city where the car was (or will be) returned, VIN is a foreign key that references the table CAR. The rental company has two branches, one in San Diego (SD) and one in Los Angeles (LA) . Cars are picked up and returned by the customers at these two locations.
RENTCOST $$\begin{array} { | l | l | } \hline \text { MAKE } & \text { COST } \\\hline \text { FORD } & 30 \\\hline \text { GM } & 40 \\\hline \text { NISSAN } & 30 \\\hline \text { TOYOTA } & 20 \\\hline \text { VOLVO } & 50 \\\hline\end{array}$$ In RENTCOST, COST shows the base cost of renting a given MAKE for one day.
CAR $$\begin{array} { | l | l | l | l | } \hline \text { VIN } & \text { MAKE } & \text { RENTED } & \text { AT } \\\hline \text { F1 } & \text { FORD } & \text { NO } & \text { SD } \\\hline \text { F2 } & \text { FORD } & \text { NO } & \text { SD } \\\hline \text { F3 } & \text { FORD } & \text { YES } & \text { IR } \\\hline \text { F4 } & \text { FORD } & \text { NO } & \text { LA } \\\hline \text { G1 } & \text { GM } & \text { YES } & \text { SD } \\\hline \text { G2 } & \text { GM } & \text { YES } & \text { SD } \\\hline \text { N1 } & \text { NISSAN } & \text { YES } & \text { LA } \\\hline \text { N2 } & \text { NISSAN } & \text { NO } & \text { LA } \\\hline \text { T1 } & \text { TOYOTA } & \text { NO } & \text { IR } \\\hline \text { T2 } & \text { TOYOTA } & \text { NO } & \text { IR } \\\hline \text { V1 } & \text { VOLVO } & \text { NO } & \text { LA } \\\hline \text { V2 } & \text { VOLVO } & \text { NO } & \text { LA } \\\hline\end{array}$$ The table CAR (primary key = VIN) provides information about each car, in particular if it is currently rented, and where its usual storage location is (attribute AT) .
CREATE VIEW CUST_SD AS
SELECT * FROM CUSTOMER
WHERE Cregion = 'SD'
CREATE VIEW CUST_40D AS
SELECT CNAME, RENTALS.MAKE, RENTCOST.COST
FROM CUSTOMER, RENTALS, RENTCOST
WHERE CUSTOMER.CID = RENTALS.CID
AND RENTALS.MAKE = RENTCOST.MAKE
AND RENTCOST < 40
CREATE VIEW Make_View (Make, NumRentals, Cregion, Storageat) AS
SELECT RENTALS.MAKE, Count (RTN) , Cregion, AT
FROM CUSTOMER, RENTALS, CAR
WHERE CUSTOMER.CID = RENTALS.CID
AND RENTALS.VIN = CAR.VIN
GROUP BY RENTALS.MAKE, Cregion, At
-The number of rows in the view Make-View is:

• A) 6
• B) 5
• C) 4
• D) 3

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Definitions:

Verstehen

A German term used in sociology that refers to the understanding of social phenomena from the actor's perspective.

Objectification

The act of treating a person as an object or commodity, often reducing them to their physical attributes or functions.

Symbolic Interaction

The process of people interacting with each other through the use of symbols, gestures, words, and other symbolic forms to create social realities.

Macrosociological Theory

An approach to sociology focusing on social systems and populations on a large scale, examining the social structures and processes that shape society.