TicketDependencyChildLocal
    dep   TicketDependencyId
    child LocalTicketId

    UniqueTicketDependencyChildLocal dep

TicketDependencyChildRemote
    dep   TicketDependencyId
    child RemoteObjectId

    UniqueTicketDependencyChildRemote dep

RemoteTicketDependency
    ident RemoteObjectId
    child LocalTicketId

    UniqueRemoteTicketDependency ident