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--
-- Slots represent an n:m relation between revisions and content objects.
-- A content object can have a specific "role" in one or more revisions.
-- Each revision can have multiple content objects, each having a different role.
--
CREATE TABLE /*_*/slots (
-- reference to rev_id
slot_revision_id bigint unsigned NOT NULL,
-- reference to role_id
slot_role_id smallint unsigned NOT NULL,
-- reference to content_id
slot_content_id bigint unsigned NOT NULL,
-- The revision ID of the revision that originated the slot's content.
-- To find revisions that changed slots, look for slot_origin = slot_revision_id.
slot_origin bigint unsigned NOT NULL,
PRIMARY KEY ( slot_revision_id, slot_role_id )
) /*$wgDBTableOptions*/;
-- Index for finding revisions that modified a specific slot
CREATE INDEX /*i*/slot_revision_origin_role ON /*_*/slots (slot_revision_id, slot_origin, slot_role_id);
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