Create an example of an entity with several attributes. Create requirements and the ER diagram for a scenario with two entities (both with several attributes) involved in the following relationshi E2.2a 1:M relationship, where participation on the 1 E2.1 E2.2 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 E22f 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