CREATE TABLE (employee ID CHAR(2)NOTNULL UNIQUE, name CHAR(30)NOT NULL, address CHAR(40), principal ID CHAR(3));
B.
CREATE warehouse(warehouse ID CHAR(2)PRIMARY KEY, name CHAR(30), address CHAR(40), principal ID CHAR(3));
C.
CREATE TABLE warehouse(warehouse ID CHAR(2)PRIMARY KEY, name CHAR(30)NOT NULL, address CHAR(40), principal ID CHAR(3), FOREIGN KEY(principal ID)REFERENCES employee(employee ID));
D.
CREATE TABIE warehouse(warehouse ID CHAR(2), name CHAR(30)NOT NULL, address CHAR(40), principal ID CHAR(3), PRIMARY REY(warehouse ID), FOREIGN KEY(employee ID)REFERENCES employee(employee ID));