Improve #MySQL delete performance
mysql > SET session transaction isolation level READ COMMITTED;
Query OK, 0 rows affected
Time: 0.001s
mysql > SET session autocommit=1;
Query OK, 0 rows affected
Time: 0.001s
mysql >
MongoDB stores documents in collections
Collections are analogous to tables in relational databases. If a collection does not exist, MongoDB creates the collection when you first store data for that collection.
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