Create an ER diagram for the following entities and business rules. Ensure that the ER diagram properly handles: Weak/strong entities . Relationships (assume that the only connections are binary) Cardinalities Cardinality constraints Attribute properties (primary identity, atomic, composite, multivalued, and derived) Indicate if the attributes can be NULL or not (i.e. if they require a value or can be left 'blank'- this will help define data constraints) Indicate the primary identifiers in the tables (primary keys and foreign keys-can use the PK and FK notation) 'Action' words as necessary Entities: 1. Customer: customer ID, name (first and last), billing address (number, street, city, province, postal code), contact email 2. Location: location ID, address (number, street, city, province, postal code), power consumption meter, customer ID, consumed power 3. Flat Rate: rate ID, maximum value of kWh for the range, price per kWh 4. Netmeter: netmeter ID, renewable generated power