Primary Key
In Data Science, a primary key is a unique identifier for a record in a database table. It is a column or set of columns that uniquely identifies each row in the table. The primary key is used to enforce data integrity and ensure that each record in the table can be uniquely identified. It is also used to establish relationships between tables in a database. In Artificial Intelligence, primary keys are used to identify unique instances of data in a dataset, which is important for training machine learning models. The primary key is often used as the index for the dataset, which allows for efficient searching and retrieval of data.
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