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 describes the terrifying sounds of the storm.
Text on source
In the other cabins the beds were perfectly soaked in water, whilst the tremendous roar of the waves, the creaking of the timbers, and the rolling motion deprived us of all hopes of repose. To complete this catalogue of horrors, we heard the voices of sailors from time to time louder than the blustering winds or the raging ocean itself, uttering horrible vollies of curses and oaths.
English translation
Folios/Pages
p. 488
Date
1773 10 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.