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.
Fermo Carrara, while traveling with Giovanni Antonio Soderini, recounts that at Hagia Sophia, no Christians were allowed to enter anymore because once the sound of a bell interrupted their prayer.
Text on source
Andassimo per grande amicitia et interesse a vedere la Chiesa di Santa Sofia, hora moschea, nella quale non lasciano entrare alcun Christiano, doppo che pochi mesi avanti, havevano udito sonare una campana nella medesima chiesa, mentre facevano oratione, che udito il sono li levorono dell'oratione andando a guardare per tutta la chiesa, mà non viddero nè campana, nè gente alcuna.
English translation
Folios/Pages
f. 189r
Date
1673 05 29 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.