Opening triggers
On Database view tap on any trigger in the list, Trigger view containing the selected trigger will pop.
Creating triggers
On Database view tap "New Trigger" button, Triggers view will pop.
Tap "Edit script", a Script Editor view will pop. Read more in "Script editor".
After you wrote a script defining the trigger tap "Test script". If script is incorrect correct it.
Finally tap "Save" button.
Deleting triggers
On Database view tap on "Edit" button, then select triggers you want to delete, finally tap on "Done" button.
Editing script
Tap "Edit script", a Script Editor view will pop. Read more in "Script editor".
After you wrote a script defining the trigger tap "Test script". If script is incorrect correct it.
Finally tap "Save" button.