Please note that all relationships with this element, and all its children will be deleted as well.
What does this mean?
Parent, Children and Cascade deletions
"Children" elements are elements that directly depend on another object (the "parent").
They only have sense in a certain context, and if the context to which they belong is removed, to mantain data meaning and integrity the application provides also the removal of them (now become "orphans").
Example
Take the case of a Travel and of the Events occurred during it.
In this example, deleting a Travel will leave all of its Events meaningless since, taken alone, they would have no context in which to place themselves, nor a way to reach them.
Consequently, the removal of a Travel also causes the elimination - cascading - of all Events that occurred in that Trip.
Important
Note that this operation is not limited to one level of relationship, but proceeds with children of deleted children and so on, until the entire database is freed from unnecessary data.
This lets the user remove all data about a Travel by simply deleting that Travel.
The askia's heart breaks at the sound of drums. This is not the only episode in the chronicle of kings who died because of a heart attack followed the sound of music (see Gomez, 2018, p. 328).
Text on source
ولمّا اصبح اسكيا داوود فى مقابلة بلد سام امر جميع ارباب الات الطرب ان يسلّموا على اسكيا محمد بنكن بضرب الالات فلمّا سمع الاصوات انقطع نياط قلبه فمات من ساعته وبقى عياله ثمه [ص. ١٠٤-١٠٥]
English translation
The next morning, while Askiya Dawud was still opposite the town of Sāma, he ordered his musicians [arbāb ālāt al-ṭarab] to greet Askiya Muḥammad Bonkana by sounding their instruments [ālāt]. When Muḥammad Bonkana heard the sound, his heart broke and he died on the spot, but his children continued living there
Folios/Pages
149
Date
1559 circa
Observations on the events description
The musicians are called here the "Lords of musical instruments" [arbāb ālāt al-ṭarab], suggesting an honorific position similar to that of the "Lords of drums", namely the empire's dignitaries.
The dots on the map indicate the places where sound and music events were described. They don't represent travel stages.