query: does foreign key really slow the performance and better not to use it?
positive_passages.docid: 18217
positive_passages.text: Does Foreign Key improve query performance?
negative_passages.docid: 134117
negative_passages.text: Defining foreign key relationships for Rails' models
negative_passages.docid: 80490
negative_passages.text: Does MySQL foreign_key_checks affect the entire database?
negative_passages.docid: 18944
negative_passages.text: Entity framework finding foreign keys
negative_passages.docid: 74726
negative_passages.text: How can I add a foreign key when creating a new table?
negative_passages.docid: 97440
negative_passages.text: How to list table foreign keys
negative_passages.docid: 155601
negative_passages.text: In SQL, is it OK for two tables to refer to each other?
negative_passages.docid: 63636
negative_passages.text: Lock time not involved in MySQL slow query selection?
negative_passages.docid: 110084
negative_passages.text: Advantages of utilizing Entity Field query over views?
negative_passages.docid: 155762
negative_passages.text: ON DELETE CASCADE not deleting entry for foreign key
negative_passages.docid: 18781
negative_passages.text: SQL count(*) performance
negative_passages.docid: 77984
negative_passages.text: Changing MySQL primary key when foreign key contraints exist
negative_passages.docid: 113750
negative_passages.text: When should I use a unique constraint instead of a unique index?
negative_passages.docid: 75366
negative_passages.text: Why is SELECT * considered harmful?
negative_passages.docid: 46470
negative_passages.text: Can MySQL reasonably perform queries on billions of rows?
negative_passages.docid: 145241
negative_passages.text: Using an ORM or plain SQL?
negative_passages.docid: 101199
negative_passages.text: PostgreSQL foreign key not existing, issue of inheritance?