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 reflects on the perilous state of the traveller, exposed to the unpredictability of the sea, and describes the terrifying sound of the waves crashing against the ship.
Text on source
The ship's head, her stern, or her broad-side, were by turns directed towards the shore, on which we heard the surf breaking with a much more dreadful sound than it had ever had before, when unconnected with the ideas of immediate danger; at last we fortunately drifted clear of the point at a short distance.
English translation
Folios/Pages
pp. 241-242
Date
1774 07 25
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.