Author Question: Facebook uses the Apache Software Foundation's Cassandra NoSQL database. Indicate whether the ... (Read 65 times)

anjilletteb · **on:** Jul 7, 2018

Facebook uses the Apache Software Foundation's Cassandra NoSQL database.

Indicate whether the statement is true or false

Question 2

Explain the representation of a many-to-many strong entity relationship in a relational database design.

What will be an ideal response?

Liddy · **Reply #1 on:** Jul 7, 2018

Answer to Question 1

TRUE

Answer to Question 2

Many-to-many relationships cannot be directly represented in a relational database design. Therefore, many-to-many relationships are essentially broken into two one-to-many relationships by creating an intersection table that represents the relationship itself. The intersection table takes its key as a combination of the keys of the two original, or parent, entities. Each of the parent entities has a one-to-many relationship with the intersection table that is represented by placing the keys of the parents into the intersection table.