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Asked by Shruthi Last Modified
Answer
A bridge table, also known as an associative table or junction table, plays a crucial role in relational database design. It is primarily used to manage many-to-many relationships between entities.
Key Features of a Bridge Table:
Association of Entities:
Attributes:
Normalization:
Use Cases and Examples:
Student-Course Relationship:
If a student can enroll in multiple courses, and a course can have multiple students, a bridge table can represent this relationship.
+-------------------+ | Student-Course | +-------------------+ | Student_ID (FK) | | Course_ID (FK) | | Enrollment_Date | +-------------------+ Employee-Project Relationship:
In scenarios where an employee can work on multiple projects and a project can involve multiple employees, a bridge table is essential.
+-------------------+ | Employee-Project | +-------------------+ | Employee_ID (FK) | | Project_ID (FK) | | Role | +-------------------+ Importance in Data Modeling Training:
Normalization Principles:
Query Optimization:
Conclusion:
In conclusion, a bridge table is a fundamental concept in data modeling, especially in handling complex relationships within a relational database. As part of my Data Modeling Training, I ensure thorough coverage of bridge tables and their application in real-world scenarios. For those seeking the best online coaching for Data Modeling Training, understanding the intricacies of bridge tables is a key aspect of the comprehensive curriculum provided.
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