+ { key => 'bookfundid',
+ foreigntable => 'aqbookfund',
+ foreignkey => 'bookfundid',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ ],
+ branchtransfers => [
+ { key => 'frombranch',
+ foreigntable => 'branches',
+ foreignkey => 'branchcode',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ { key => 'tobranch',
+ foreigntable => 'branches',
+ foreignkey => 'branchcode',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ { key => 'itemnumber',
+ foreigntable => 'items',
+ foreignkey => 'itemnumber',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ ],
+ issuingrules => [
+ { key => 'categorycode',
+ foreigntable => 'categories',
+ foreignkey => 'categorycode',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ { key => 'itemtype',
+ foreigntable => 'itemtypes',
+ foreignkey => 'itemtype',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ ],
+ issues => [ # constraint is SET NULL : when a borrower or an item is deleted, we keep the issuing record
+ # for stat purposes
+ { key => 'borrowernumber',
+ foreigntable => 'borrowers',
+ foreignkey => 'borrowernumber',
+ onUpdate => 'SET NULL',
+ onDelete => 'SET NULL',
+ },
+ { key => 'itemnumber',
+ foreigntable => 'items',
+ foreignkey => 'itemnumber',
+ onUpdate => 'SET NULL',
+ onDelete => 'SET NULL',
+ },
+ ],
+ reserves => [
+ { key => 'borrowernumber',
+ foreigntable => 'borrowers',
+ foreignkey => 'borrowernumber',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ { key => 'biblionumber',
+ foreigntable => 'biblio',
+ foreignkey => 'biblionumber',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ { key => 'itemnumber',
+ foreigntable => 'items',
+ foreignkey => 'itemnumber',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ { key => 'branchcode',
+ foreigntable => 'branches',
+ foreignkey => 'branchcode',
+ onUpdate => 'CASCADE',
+ onDelete => 'CASCADE',
+ },
+ ],
+ borrowers => [ # foreign keys are RESTRICT as we don't want to delete borrowers when a branch is deleted
+ # but prevent deleting a branch as soon as it has 1 borrower !
+ { key => 'categorycode',
+ foreigntable => 'categories',
+ foreignkey => 'categorycode',
+ onUpdate => 'RESTRICT',
+ onDelete => 'RESTRICT',
+ },
+ { key => 'branchcode',
+ foreigntable => 'branches',
+ foreignkey => 'branchcode',
+ onUpdate => 'RESTRICT',
+ onDelete => 'RESTRICT',
+ },