{"json_modified": "2016-03-28T08:24:25.020725", "uuid": "fc060204-c9d1-4b18-a3df-c78b72ed48a1", "title": "upgradeneeded", "url": "/en-US/docs/Web/Events/upgradeneeded_indexedDB", "tags": [], "translations": [], "modified": "2014-06-19T01:32:23", "label": "upgradeneeded", "localization_tags": [], "locale": "en-US", "id": 57231, "last_edit": "2014-06-19T01:32:23", "summary": "The <code>upgradeneeded</code> handler is executed when an attempt was made to open a database with a version number higher than its current version.", "sections": [{"id": "General_info", "title": "General info"}, {"id": "Properties", "title": "Properties"}, {"id": "Example", "title": "Example"}, {"id": "Related_Events", "title": "Related Events"}, {"id": "See_also", "title": "See also"}], "slug": "Web/Events/upgradeneeded_indexedDB", "review_tags": []}