Exercises Create an example of an entity with several attribu E2.1 E2.2 Create requirements and the ER diagram for a scenario with two entities (both with several attributes) involved in the following relationship: E2.2a 1:M relationship, where participation on the 1 side is mandatory and participation on the M side is optional. E2.2b 1:M relationship, where participation on the 1 side is optional and participation on the M side is E2.2c 1:M relationship, where participation on both E2.2d 1:M relationship, where participation on both E2.2e M:N relationship, where participation on one mandatory sides is mandatory. sides is optional. side is mandatory and participation on the other E2.2f M:N relationship, where participation on both E2.2g M:N relationship, where participation on both side is optional. sides is mandatory sides is optional. Exercises Create an example of an entity with several attribu E2.1 E2.2 Create requirements and the ER diagram for a scenario with two entities (both with several attributes) involved in the following relationship: E2.2a 1:M relationship, where participation on the 1 side is mandatory and participation on the M side is optional. E2.2b 1:M relationship, where participation on the 1 side is optional and participation on the M side is E2.2c 1:M relationship, where participation on both E2.2d 1:M relationship, where participation on both E2.2e M:N relationship, where participation on one mandatory sides is mandatory. sides is optional. side is mandatory and participation on the other E2.2f M:N relationship, where participation on both E2.2g M:N relationship, where participation on both side is optional. sides is mandatory sides is optional