Need understanding the following. for example my database hold music information with entities such as songs, artist, albums etc.

list examples

list all actors (i. e. users) of your database

(b) for each actor, list all use-cases including all the steps. for each entity, you must have use cases that perform at least one aggregate query, one insert operation, one delete operation, and one update operation; for each relationship, you must have use cases that perform at least one joint query.

(c) use case realization: explain how the relations and relationships are used in each of the use cases. provide the complete sql statements for every use case.