Consider modelling certain features of an application for storing and organising digital photographs. Each photo has an identifier, as well as a date and time when the photo was taken and a location where the photo was taken. A photo may be of one or more people, each of whom has a (unique) name. Photos can be organised in two different ways. One is in terms of events, which might be something like "Holiday in Italy". The other is in terms of albums. Both events and albums have titles, but whereas each photo can be part of only one event, each photo can be included in any number of albums.

Draw an entity-relationship diagram that models the above description. You can use an appropriate tool for this (as long as it uses the same notation we used in class) or can draw it by hand and simply scan the result. Make sure that you specify all details in the diagram, including cardinality (multiplicity) constraints, participation constraints, keys. etc.