What are the different types of keys in programming?
An example of an AI chatbot conversation about key types in programming.
What are the different types of keys in programming?
In programming, keys are used to identify data. The main types include primary keys, foreign keys, and composite keys.
Can you explain what a primary key is?
A primary key is a unique identifier for a record in a database table, ensuring that no two records have the same key.
What about foreign keys?
A foreign key is a field in one table that links to the primary key in another table, establishing a relationship between the two.
And what is a composite key?
A composite key is a combination of two or more columns in a table that together uniquely identify a record.
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