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.
Georg Forster witnesses the conversation between Captain Cook and the natives who, finally, let the crew members approach them. The onset of night forces them to leave; upon their departure, the younger of the two women begins to dance noisily.
Text on source
The man remained silent, and looked after us with composure and great attention, which seemed to speak a profound meditation; but the youngest of the two women, whose vociferous volubility of tongue exceeded every thing we had met with, began to dance at our departure, and continued to be as loud as ever.
English translation
Folios/Pages
p. 139
Date
1773 04 06
Observations on the events description
Georg Forster talks about a noisy dance: we can suppose that the woman accompanied her movements with sounds produced with her body or voice.
The dots on the map indicate the places where sound and music events were described. They don't represent travel stages.