ALTER TABLE C_POSKey ADD CONSTRAINT ADImage_CPOSKey FOREIGN KEY(AD_Image_ID) REFERENCES AD_Image(AD_Image_ID);

ALTER TABLE C_POS ADD (CONSTRAINT OSKKeyLayout_CPOS FOREIGN KEY (OSK_KeyLayout_ID) REFERENCES C_POSKeyLayout);

ALTER TABLE C_POS ADD (CONSTRAINT OSNPKeyLayout_CPOS FOREIGN KEY (OSNP_KeyLayout_ID) REFERENCES C_POSKeyLayout);

ALTER TABLE C_POSKey ADD (CONSTRAINT ADPrintFont_CPOSKey FOREIGN KEY (AD_PrintFont_ID) REFERENCES AD_PrintFont);

ALTER TABLE C_POSKey ADD (CONSTRAINT SubKeyLayout_CPOSKey FOREIGN KEY (SubKeyLayout_ID) REFERENCES C_POSKeyLayout);

ALTER TABLE C_POSKeyLayout ADD (CONSTRAINT ADPrintColor_CPOSKeyLayout FOREIGN KEY (AD_PrintColor_ID) REFERENCES AD_PrintColor);

ALTER TABLE C_POSKeyLayout ADD (CONSTRAINT ADPrintFont_CPOSKeyLayout FOREIGN KEY (AD_PrintFont_ID) REFERENCES AD_PrintFont);