-- +goose Up

-- Indexes for the cascading foreign keys of 00002 (PD-11): deleting a chapter or a unit otherwise
-- scans the child table once per deleted row, and re-chunking a book deletes thousands.
create index notes_chapter_idx on notes (chapter_id);
create index bank_decisions_term_idx on bank_decisions (term_id);

-- The referenced key for the reservation's composite foreign key (00007): it is what makes
-- "charging account A for account B's book" impossible in the database rather than in a check the
-- next caller has to remember.
create unique index books_id_owner_idx on books (id, owner_id);

-- +goose Down
drop index books_id_owner_idx;
drop index bank_decisions_term_idx;
drop index notes_chapter_idx;