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17. PRIMARY KEY
A unique identifier for a record in a table, ensuring no duplicate entries.
1 min read Chapter 17 of 29
SQL
PRIMARY KEY
A primary key is a unique identifier for each record in a database table.
"I need to ensure every entry in my database is distinct and easily retrievable."
A primary key uniquely identifies each record in a table, preventing duplicates and ensuring data integrity.
"I need to ensure every entry in my database is distinct and easily retrievable."
A primary key uniquely identifies each record in a table, preventing duplicates and ensuring data integrity.