When should I use composite keys in databases?
An example of an AI chatbot conversation about when to use composite keys in databases.
When should I use composite keys in databases?
Composite keys are used when a single key isn't sufficient to uniquely identify a record. They combine two or more columns.
Can you give me an example of a composite key?
Sure! In a table for student enrollments, a composite key could be a combination of 'student_id' and 'course_id'.
What are the advantages of using composite keys?
They ensure uniqueness across multiple columns, which can help maintain data integrity and improve query performance.
Are there any downsides to using composite keys?
Yes, they can complicate queries and indexing, and may lead to larger indexes, which can impact performance.
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