DatabaseRegressionTestCase::testDBIndexExists in core/modules/simpletest/tests/database_test.test

Test the db_index_exists() function.

file_update_1003 in core/modules/file/file.install

Add a type column to the file_managed table, and add a file_metadata table.

redirect_update_1001 in core/modules/redirect/redirect.install

Rename the language column to langcode, drop inactive redirects.

redirect_update_1004 in core/modules/redirect/redirect.install

Fix redirect table schema of upgraded sites.

taxonomy_update_1002 in core/modules/taxonomy/taxonomy.install

Drop the old taxonomy vocabulary table.

user_update_1024 in core/modules/user/user.install

Add a "changed" column to the "users" table.