Which Foreign Key constraints does JIRA enforce in the Database (MySQL)?

[MartinS]

We have recently converted a JIRA 4.1 Installation from using MyISAM to using InnoDB. When doing the same for Confluence, foreign key constraints have to be added. However, it seems that a fresh installation of JIRA 4.1 does not create any foreign key constraints at all.

When upgrading to 6.0, only a few constraints are created for Active Objects, but none for "internal" JIRA Tables.

The information on the web is very slim, only a pdf by a third party can be found easyily, which claims that "the JIRA database does not enforce foreign keys and does not actually use the same data type for foreign keys in all cases".

Is that correct? Do I need to create no foreign key constraints after switching from MyISAM to InnoDB?

[Julian Riedinger _Decadis AG_]

no, you haven't ... The correlations were implemented internally in JIRA

[MartinS]

I am willing to accept the answer if

1. You reformulate "no, you haven't" - that is no sentence and has no reference to the question
2. You give a reference