The different classes of relations created by the technique for preventing modification anomalies are called:
The different classes of relations created by the technique for preventing modification anomalies are called:
A relation is considered a:
A relation is considered a:
Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that:
Every time attribute A appears, it is matched with the same value of attribute B, but not the same value of attribute C. Therefore, it is true that:
If attribute A determines both attributes B and C, then it is also true that:
If attribute A determines both attributes B and C, then it is also true that:
An attribute is a(n):
An attribute is a(n):
A functional dependency is a relationship between or among:
A functional dependency is a relationship between or among:
Table is synonymous with the term:
Table is synonymous with the term:
When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n):
When the values in one or more attributes being used as a foreign key must exist in another set of one or more attributes in another table, we have created a(n):
A relation in this form is free of all modification anomalies.
A relation in this form is free of all modification anomalies.
In the relational model, relationships between relations or tables are created by using:
In the relational model, relationships between relations or tables are created by using:
One solution to the multivalued dependency constraint problem is to:
One solution to the multivalued dependency constraint problem is to:
A tuple is a(n):
A tuple is a(n):
A relation is in this form if it is in BCNF and has no multivalued dependencies:
A relation is in this form if it is in BCNF and has no multivalued dependencies:
Which of the following is not a restriction for a table to be a relation?
Which of the following is not a restriction for a table to be a relation?
The primary key is selected from the:
The primary key is selected from the:
For some relations, changing the data can have undesirable consequences called:
For some relations, changing the data can have undesirable consequences called:
If attributes A and B determine attribute C, then it is also true that:
If attributes A and B determine attribute C, then it is also true that:
