Degree & Cardinality of a relation

🔍 Degree of Relation

In a Relational Database, the Degree of a relation refers to the number of attributes (columns) in that relation (table).

🔍 Degree of a Relation = Total number of attributes (columns) in the relation (table).

📊 Example Table: Students

• This table has 4 attributes:

  • 🆔 StudentID

  • 👤 Name

  • 🎂 Age

  • 🎓 Major

✅ Degree = 4

🔍 Cardinality of Relation

In a Relational Database, the Cardinality of a relation refers to the number of tuples (rows) in that relation (table).

🔍 Cardinality of a Relation = Total number of tuples (rows) in the relation (table).

📊 Example Table: Students

• This table has 3 tuples (records/rows)

✅ Cardinality = 3

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