Characteristics of Relation in Database Management Systems
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Questions and Answers

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?

<p>Relations may allow null values for attributes.</p> Signup and view all the answers

Give an example of an atomic value in a relation.

<p>An atomic value is a single, indivisible value like '25' for the 'Age' attribute.</p> Signup and view all the answers

What is a primary key in a relation?

<p>A primary key is a special column that uniquely identifies each row.</p> Signup and view all the answers

Why is it important to have atomic values in a relation?

<p>To maintain data integrity and ensure simplicity.</p> Signup and view all the answers

How can you ensure the uniqueness of tuples in a relation?

<p>By using a primary key.</p> Signup and view all the answers

What does it mean for tuples to be unordered in a relation?

<p>There is no specific sequence in which tuples are stored.</p> Signup and view all the answers

Explain the concept of null values in a relation.

<p>Null values indicate missing or unknown information for certain attributes.</p> Signup and view all the answers

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