Context name is a database key?! How to rename?

TABLE                                COLUMN
-----                                ----
modx_context                         key
modx_access_context                  target
modx_access_media_source             target
modx_access_category                 context_key
modx_access_elements                 context_key
modx_access_resources                context_key
modx_access_resource_groups          context_key
modx_access_templatevars             context_key
modx_context_setting                 context_key
modx_media_sources_contexts          context_key
modx_media_sources_elements          context_key
modx_context_resource                context_key
modx_site_content                    context_key

UPDATE modx_context                 SET `key`         = 'new context name' WHERE `key`         = 'old context name';
UPDATE modx_access_context          SET `target`      = 'new context name' WHERE `target`      = 'old context name';
UPDATE modx_access_media_source     SET `target`      = 'new context name' WHERE `target`      = 'old context name';
UPDATE modx_access_category         SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_access_elements         SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_access_resources        SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_access_resource_groups  SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_access_templatevars     SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_context_setting         SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_media_sources_contexts  SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_media_sources_elements  SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_context_resource        SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';
UPDATE modx_site_content            SET `context_key` = 'new context name' WHERE `context_key` = 'old context name';