Database tables in v29.0.11

Where can I find database structure change between 29.0.11 and 30.x in Nextcloud source codes?
Do following tables exist in v29.0.11?

oc_appconfig_ex
oc_ex_apps
oc_ex_apps_daemons
oc_ex_apps_routes
oc_ex_event_handlers
oc_ex_occ_commands
oc_ex_settings_forms
oc_ex_speech_to_text
oc_ex_speech_to_text_q
oc_ex_task_processing
oc_ex_text_processing
oc_ex_text_processing_q
oc_ex_translation
oc_ex_translation_q
oc_ex_ui_files_actions
oc_ex_ui_scripts
oc_ex_ui_states
oc_ex_ui_styles
oc_ex_ui_top_menu
oc_preferences_ex
oc_taskprocessing_tasks
oc_webhook_listeners

These seem to be the changes applied to databases during upgrades:

Apps can create tables as well. If you uninstall apps, the data is kept, so if you have an old setup where you tried a lot of different apps in the past, you might end up with a number of unused tables.

Regarding your tables, there was topic on that: