text: 
  -- CREATE TABLE Contactable (
  --     ContactableId  BIGINT NOT NULL,
  --     Email          VARCHAR(256),
  --     PhoneNumber    VARCHAR(20),
  --     FaxNumber      VARCHAR(20),
  --     Address1       VARCHAR(256),
  --     Address2       VARCHAR(256),
  --     PostalCode     VARCHAR(10),
  --     ProvinceState  VARCHAR(50),
  --     Country        VARCHAR(50),
  --     CreatedDate    TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
  --     	PRIMARY KEY(id)
  -- );
  
  
  -- L'entit� Customer est contactable.
  -- CREATE TABLE Customer (
  --     CustomerId     BIGINT NOT NULL REFERENCES Contactable (ContactableId),
  --     CustomerNumber VARCHAR(20) NOT,
  --     Name           VARCHAR(50) NOT,
  -- 
  --     FOREIGN KEY(CustomerId) REFERENCES Contactable(ContactableId),
  --     UNIQUE INDEX IX_Name (CustomerNumber),
  --     PRIMARY KEY(id)
  -- );