In crow's foot style E-R diagrams, a hash mark across the ...

[sjones]

In crow's foot style E-R diagrams, a hash mark across the relationship line near an entity indicates:
 
  A) a minimum cardinality of zero.
  B) a minimum cardinality of one.
  C) a maximum cardinality of one.
  D) a maximum cardinality of many.
  E) Both B and C

Question 2

What requirements must a two-dimensional table satisfy in order to be a relation?
 
  What will be an ideal response?

[LegendaryAnswers]

Answer to Question 1

E

Answer to Question 2

For a table to be considered a relation, it must meet several requirements. First, every cell must contain a single value. Second, there can be no duplicate rows. Third, each column must have a unique name. Fourth, the order of the columns must have no significance. Fifth, all values for a given column must be of the same type. Finally, the order of the rows must have no significance.

[sjones]

Gracias!

[ttt030911]

Excellent