Which of the following is true to implement the Buy/Sell Transactions and Stocks classes and the association between them in the preceding UML class diagram in a database?
a. The primary key of Stocks is a foreign key in Buy/Sell Transactions.
b. The primary key of Buy/Sell Transactions is a foreign key in Stocks.
c. The association between Stocks and Buy/Sell Transactions is implemented as a linking table.
d. Both a and b are true.
e. None of these is true.

Transcribed Image Text:

Stock Exchanges 0..* 2 1..* Stocks 1..1 3 Brokers 6 0..* 4 1..1 5 0..* Buy/Sell Transactions