Using Oracle database, suppose I have a parent table parent defined in schema A, and a child table child defined in schema B. To achieve this, schema A granted references privilege on parent to schema ...
I come across two constraint issues all the time (UNIQUE, and referential integrity constraints) within InnoDB. My question is when these issues arise reproducibly what is typically the solution? I'm ...
I'm new to this and Googling didn't help me with this one. I'm trying to check whether a foreign key constraint already exists like this: $sql = 'SELECT `constraint_name`, `table_name` FROM ...