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.
Domenico Trevisan arrives at the audience with the Sultan. His eight trumpets cannot play inside the castle where he is welcomed by castanets, large cymbals and other instruments.
Text on source
Arrivati nui a le porte dil castello dismontessimo da cavalo; avanti la persona di l'orator era i nostri 8 trombeti con le bandiere d'oro nove, ma i non lassono si sonasse per i soi respeti de mori, che li par che nel suo castello non si deba sonar le nostre trombe e cussì le feceno portar in mano senza sonar, e smontati, li do strafieri stevano driedo l'orator tenendo la coa dil manto, et aviati dentro dil castello, l'orator andava pian salutando con la testa quelli primi signori che erano in dito locho. Quelli dil castello, nel suo intrar dentro de seraia in seraia, sonavano certe sue nachere, cimbali grandi e simili soi instrumenti, e con bombarde faceano festa mirabile; tute quelle piaze tra porte dil castello erano di mamaluchi vestiti di biancho, un numero infinito.
English translation
Folios/Pages
p. 123
Date
1512 06 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.