Question 1 :
In a relation, the order of the rows matters.
Question 2 :
In a relation, the rows are sometimes called "records."
Question 3 :
A relation is a two-dimensional table.
Question 4 :
Any table that meets the definition of a relation is said to be in first normal form.
Question 5 :
Given the functional dependency R ? (S,T) , then it is also true that R ? S.
Question 6 :
A candidate key is a determinant that determines all the other columns is a relation.
Question 7 :
The only reason for the existence of relations is to store instances of functional dependencies.
Question 8 :
A relation is in 5NF when multivalued dependencies are isolated in their own relation.
Question 9 :
The functional dependency R ? S means that the value of S can be determined when we are given a value of R.
Question 10 :
In a relation, the columns are sometimes called "attributes."
Question 11 :
In a relation, the order of the columns does not matter.
Question 12 :
A functional dependency is a relationship between or among attributes.
Question 13 :
A key is a group of one or more attributes that uniquely identifies a row.
Question 14 :
Keys made up of two or more attributes are called composite keys.
Question 15 :
Given the functional dependency R ? S , R is called the determinant.
Question 16 :
Relations are categorized into normal forms according to the referential integrity constraints that they have.
Question 17 :
A relation is in Boyce-Codd Normal Form (BCNF) if every determinant is a composite key.
Question 18 :
A functional dependency is always an equation.
Question 19 :
A relation has cells that hold multi-value entries.
Question 20 :
In a relation, the rows are sometimes called "fields."
Question 21 :
A primary key is a composite key that was selected to be the main identifier for the relation.