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 reports on the heeva his father and other crew members can experience on Tahaa Island.
Text on source
After our party had dined in O-Hamene harbour, they removed to the next creek to the north, and walked to the house of a chief named O-Tàh, where the natives said there would be a heeva or public dance. The crowd increased prodigiously as they approached it, and in their way they saw a woman at a considerable distance, dressed in a singular habit, and blacked all over. They were told she performed the burial rite, or mourned for a dead person. They found the aree, who was an elderly man, sitting on a wooden stool, of which he offered one half to my father. The dance was begun some time after by three young girls, the eldest not exceeding ten, and the youngest about five years of age. The usual music was performed on three drums, and in the intervals of the dance three men performed something of a pantomime drama, which represented travellers asleep, and thieves dextrously conveying away their goods, round which they had, for greater security, placed themselves.
English translation
Folios/Pages
pp. 412-413
Date
1773 09 14 circa
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.