Terminology is important for the following reasons:
a. It is used to express and define the special ideas and concepts of the relational database model.
b. It is used to express and define the database-design process itself.
c. It is used anywhere a relational database or RDBMS is discussed.
The four categories of terms are value-related, structure-related, relationship-related, and integrity-related.
The values you store in the database are data. Information is data that you process in a manner that makes it meaningful and useful to you when you work with it or view it.
A null represents a missing or unknown value.
The major disadvantage of nulls is that they have an adverse affect on mathematical operations.
Tables are the chief ...