What are some examples of SQL data integrity?
An example of an AI chatbot conversation about SQL data integrity and its importance in databases.
What are some examples of SQL data integrity?
SQL data integrity refers to the accuracy and consistency of data within a database. Examples include primary keys, foreign keys, and unique constraints.
Can you explain what a primary key is?
A primary key is a unique identifier for a record in a table. It ensures that no two rows have the same value in that column.
What about foreign keys?
Foreign keys are used to link two tables together. They ensure that the value in one table matches a value in another, maintaining referential integrity.
How do unique constraints work?
Unique constraints ensure that all values in a column are different from each other, preventing duplicate entries.
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