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 explains the reasons behind their excursion: they wanted to discover the place from which they heard this kind of lamentation every morning, imagining that it might be a place of worship. It is located on the eastern point of the bay as he says on page 362.
Text on source
Every morning, at day-break, we heard a slow solemn song or dirge sung on this point, which lasted more than a quarter of an hour. It seemed to be a religious act, and gave us great reason to suspect that some place of worship was concealed in these groves, and the constant endeavours of the natives to keep us from this place, greatly confirmed us in this supposition.
English translation
Folios/Pages
pp. 300-301
Date
1774 08 11
Observations on the events description
The dots on the map indicate the places where sound and music events were described. They don't represent travel stages.