Which of the following is true about representing a weak entity ...

[pane00]

Which of the following is true about representing a weak entity with the relational model?
 
  A) If the weak entity is existence-dependent, the key of the parent must be part of the key of the weak entity.
  B) If the strong entity has a minimum cardinality of 1, the key of the weak entity must be part of the strong entity.
  C) If the weak entity is ID-dependent, the key of the weak entity must be part of the key of the parent entity.
  D) If the weak entity is ID-dependent, the key of the parent entity must be part of the key of the weak entity.
  E) If the parent entity is existence-dependent, then the minimum cardinality of the weak entity is zero.

Question 2

Which SQL keyword is used to specify a condition that rows must meet to be included in the results of an SQL SELECT query?
 
  A) SELECT
  B) FROM
  C) WHERE
  D) ORDER BY
  E) GROUP BY

[Anna]

Answer to Question 1

D

Answer to Question 2

C

[pane00]

Gracias!

[lcapri7]

Excellent