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A primary key is a unique identifier for each record in a database table, making sure no two rows have the same primary key value. Learn more with Techopedia.

A security key is a physical device you can take with you that acts as a key to accounts with sensitive information. In the digital age, it's nice to have something tangible that works the ...

ERROR 3750 (HY000): Unable to createorchange a tablewithout a primary key, when the systemvariable'sql_require_primary_key'is set. Add a primary keyto the tableor unset this variableto avo ...

Set up “auto increment” semantics for an integer primary key column with no foreign key dependencies I'm not sure if at the moment there is a way of adding auto-increment to a non primary key column.

Schema design, indexes, queries, configs, I/O... what could go wrong? Follow these 10 essential tips to keep your MySQL servers humming.