Final answer:
The statement that no component of the primary key of a base relation can be null refers to the concept of entity integrity in relational database design. It ensures unique identification of each record in a table.
Step-by-step explanation:
No component of the primary key of a base relation is allowed to be null. This statement is referencing the concept of entity integrity, which is a fundamental aspect of relational database design. Entity integrity ensures that every table has a unique primary key and that each component of the primary key is never null, allowing for unique identification of record rows within the database table.
Normalization is the process of organizing data in a database to reduce redundancy and improve data integrity. Referential integrity, on the other hand, ensures that relationships between tables stay consistent. Denormalization is the process of combining normalized tables to improve read performance at the expense of write performance and possible duplication of data.