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 tells of some voices they heard during one of their excursions. They didn't see the people from whom these voices came.
Text on source
At the end of the plain we observed a long, and spacious valley, from whence we saw a great number of smokes rising, and heard the promiscuous voices of many men, women, and children. We stood in a path, on both sides of which were thick shrubberies; and the vale itself was so full of groves, that we neither saw the people, whose voices we heard, nor any of their dwellings.
English translation
Folios/Pages
pp. 294-295
Date
1774 08 10
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.