| MySQL is a Relational Database Model | Relational Database. |
Most relational database systems execute the ALTER TABLE statement in a few milliseconds. MySQLMySQL
MySQL is a [[Relational Database Model
Relational Database]].
Most relational database systems execute the ALTER TABLE statement in a few milliseconds. [[MySQL]] is a... is a notable exception—it copies the entire table on ALTER TABLE, which can mean minutes or even hours of downtime when altering a large table— although various tools exist to work around this limitation.
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