Solution

The correct answer is the number of attributes in the relation.

Key Points

• The degree of a relation (or table) in a database refers to the number of attributes (or columns) that the relation contains.
  • Each attribute represents a property or characteristic of the entity that the relation describes.
  • For example, in a student relation, attributes could include student ID, name, age, and major.
  • The degree of the student relation would be 4 if there are four attributes.
  • This term is different from the cardinality of a relation, which refers to the number of tuples (or rows) in the relation.

Additional Information

• Understanding the degree of a relation is essential in database design, as it impacts how data is structured and accessed.
• Database schemas define the structure of relations, including their degree and the data types of their attributes.
• Normalization techniques in database design aim to optimize the degree and minimize redundancy.
• Relational database management systems (RDBMS) use the schema to enforce data integrity and support query optimization.