Example table: Ticket - id - tenant_id - foo TicketItem - id - tenant_id - ticket_id - bar Assuming that id and tenant_id on each table make up composite primary keys, and that ticket_id is a forei
I\'m a little confused about data consistency and data integrity. From Orac开发者_如何学JAVAle Database Concepts:
I have a web application with a user base. I want to add a forum, but I don\'t want users to register there again.
i do get an Integrity constraint violation for Doctrine though i really can\'t see why. Schema.yml User:
Th开发者_高级运维e best way to take a string that is formated like... YYYY-MM-DD and make it appear like...
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