10 Questions
What is the significance of uniqueness in a relation?
Each tuple must be unique, ensured by the primary key.
Explain the concept of atomic values in a relation.
Attributes should be simple and indivisible, not divided into smaller pieces.
How are tuples in a relation considered in terms of ordering?
Tuples in a relation are considered unordered.
What is the role of null values in a relation?
Relations may allow null values for attributes.
Give an example of an atomic value in a relation.
An atomic value is a single, indivisible value like '25' for the 'Age' attribute.
What is a primary key in a relation?
A primary key is a special column that uniquely identifies each row.
Why is it important to have atomic values in a relation?
To maintain data integrity and ensure simplicity.
How can you ensure the uniqueness of tuples in a relation?
By using a primary key.
What does it mean for tuples to be unordered in a relation?
There is no specific sequence in which tuples are stored.
Explain the concept of null values in a relation.
Null values indicate missing or unknown information for certain attributes.
Explore the key characteristics of relations in database management systems, including uniqueness, atomic values, ordering, and the allowance of null values. Understand how these characteristics contribute to maintaining data integrity and organization within a database.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
