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Author Question: Facebook uses the Apache Software Foundation's Cassandra NoSQL database. Indicate whether the ... (Read 147 times)

anjilletteb

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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?


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Liddy

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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.


anjilletteb

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Reply 2 on: Jul 7, 2018
Gracias!

nothere

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Reply 3 on: Yesterday
:D TYSM

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