Follow Sakila conventions for table and column names:

All lower case

Underscore separator between root and suffix

Foreign keys have the same name as referenced primary key

Implement attributes as columns:

The primary key of all three tables is person$\_$id with data type SMALLINT UNSIGNED.

The last$\_$update and create$\_$date columns have data type TIMESTAMP.

The picture column has data type BLOB.

All other columns have data type VARCHAR$(20).$

Implement the belongs$\_$to and works$\_$at relationships as foreign keys:

belongs$\_$to becomes an address$\_$id foreign key in person with data type SMALLINT UNSIGNED.

works$\_$at becomes a store$\_$id foreign key in staff with data type TINYINT UNSIGNED.

Specify RESTRICT actions for both foreign keys.

Required relationships become NOT NULL foreign keys.

Subtype entities have an IsA relationship to the supertype. Implement these relationships as foreign keys:

The person$\_$id columns of customer and staff become foreign keys referring to person.

Specify CASCADE actions for both foreign keys.

NOTE: If you execute your solution with the Sakila database, you must first drop customer, staff, and all constraints that refer to these tables. Use the following statements with Sakila only, not in the zyLab environment:

ALTER TABLE payment

DROP CONSTRAINT fk$\_$payment$\_$customer,

DROP CONSTRAINT fk$\_$payment$\_$staff;

ALTER TABLE rental

DROP CONSTRAINT fk$\_$rental$\_$customer,

DROP CONSTRAINT fk$\_$rental$\_$staff;

ALTER TABLE store

DROP CONSTRAINT fk$\_$store$\_$staff;

DROP TABLE customer, staff;