Q1 (2 pt): For the following binary relationships, suggest the key constraint (one-to-one, one-to-many, many-to-one, many-to-many) based on the commonsense meaning of the entity types. Clearly state any assumptions you make. 1. Social Security Number vs. People 2. Classroom vs. Wall Q2 (1pt) : Draw the E-R diagram for 1-2 in Q1