What are composite keys in databases?
An example of an AI chatbot conversation about composite keys in databases.
What are composite keys in databases?
Composite keys are a combination of two or more columns in a database table that uniquely identify a row.
Can you give me an example of a composite key?
Sure! In a table of student enrollments, a composite key could be a combination of 'student_id' and 'course_id'.
Why would I use a composite key instead of a single primary key?
You would use a composite key when a single column isn't sufficient to uniquely identify records, ensuring data integrity.
Are there any drawbacks to using composite keys?
Yes, composite keys can complicate queries and indexing, and they may require more storage space.
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