Question

What do you understand by relationship?

Answer 1

Relationship : It is a relational database. All entities have bonds (relations) between them. A relationship is a link between two entities. It tells something about which relationship exists between our entities. For example, vouchers and accounts are related to two ways – vouchers contain debit account(s) and vouchers contain credit account(s).

In ER model those references are represented as explicit relationships rather than attributes Collection of relationship as called “Relationship Sheet”

Types of Relationship: There are three types of relationship :
1. One-to-one relationship

2. One-to-many relationship

3. Many-to-many relationship