What are database keys and why are they important?
An example of an AI chatbot conversation about database keys and their significance in databases.
What are database keys and why are they important?
Database keys are attributes that help identify records in a database. They ensure data integrity and enable efficient data retrieval.
Can you explain the different types of database keys?
Sure! The main types of database keys include primary keys, foreign keys, unique keys, and composite keys. Each serves a specific purpose in maintaining relationships and data integrity.
What is a primary key?
A primary key is a unique identifier for a record in a table. It ensures that no two records can have the same value for that key.
How does a foreign key work?
A foreign key is a field in one table that links to the primary key in another table, establishing a relationship between the two.
Why is it important to have unique keys?
Unique keys ensure that all values in a column are distinct, preventing duplicate entries and maintaining data integrity.
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