SQL: A query that verify referential integrity across all tables - mysql

Question

I have created my tables and populated it but I am not sure how to write a query to verify the referential integrity across all tables.
This is what I need:
SELECT lists all primary keys
FROM lists all tables
WHERE shows all relationships
This is what I have so far:
SELECT
categId, zipCode, suppId, acctId, prodId, orderId
From
CATEGORY, ZIP, SUPPLIER, ACCOUNT, SUPPLIER_REGION, PRODUCT, PROD_DETAIL, ORDERX, ORDER_LINE_ITEM
I am not sure what to put for WHERE.
My professor wants a command to verify the referential integrity. There are a lot of other stuff he wants but this is the only thing I am not sure how to do.
I added my tables.
create table CATEGORY (
categId varchar (8),
categIdParent varchar (8),
constraint CATEGORY_PK primary key (categId),
constraint CATEGORY_FK foreign key (categIdParent) references CATEGORY (categId)
);
create table ZIP(
zipCode int (5),
city varChar (16),
state varChar (16),
constraint ZIP_PK primary key (zipCode)
);
create table SUPPLIER (
supplId int (9),
supplName varChar (24),
supplStatus varChar (16),
supplYearEstabl date,
zipCode int (5),
constraint SUPPLIER_PK primary key (supplId),
constraint SUPPLIER_FK Foreign Key (zipCode) references ZIP (zipCode)
);
CREATE TABLE SUPPLIER_REGION (
supplId int (9),
region varChar (24),
constraint SUPPLIER_REGION_PK primary key (supplId, region),
constraint SUPPLIER_REGION_FK foreign key (supplId) references SUPPLIER (supplId)
);
create table PRODUCT (
prodId int (11),
prodDescr varChar (256),
prodType varChar (12),
prodModel Char (16),
prodPlaceOrigin Char (16),
prodPrice decimal (10,2),
prodMinQty int (8),
supplId int (9),
categId varchar (8),
constraint PRODUCT_PK primary key (prodId),
constraint PRODUCT_FK1 foreign key (supplId) references SUPPLIER (supplId),
constraint PRODUCT_FK2 foreign key (categId) references CATEGORY (categId)
);
create table PROD_DETAIL (
prodId int (11),
prodDetailNo int (8),
prodDetailName varChar (32),
prodDetailValue decimal (10,2),
constraint PROD_DETAIL_PK primary key (prodID, prodDetailNo),
constraint PROD_DETAIL_FK foreign key (prodID) references PRODUCT (prodID)
);
create table ACCOUNT (
acctId varchar(50),
acctName varChar (24),
acctDept varChar (16),
acctTitle varChar (16),
acctGender Char (1),
acctEmail varChar (24),
acctAddr varChar (24),
zipCode int (5),
acctPhone int (11),
constraint ACCOUNT_PK primary key (acctId),
constraint ACCOUNT_FK foreign key (zipCode) references ZIP (zipCode)
);
create table ORDERX (
orderId int (8),
orderPayMethod varChar (16),
orderShipDate date,
acctId varchar (50),
constraint ORDER_PK primary key (orderId),
constraint ORDER_FK foreign key (acctId) references ACCOUNT (acctId)
);
create table ORDER_LINE_ITEM (
orderId int (8),
orderLineNo int (8),
orderLineQty int (8),
orderLineUnit int (8),
orderLinePrice decimal (10,2),
prodId int (11),
constraint ORDER_LINE_ITEM_PK primary key (orderId, orderLineNo),
constraint ORDER_LINE_ITEM_FK1 foreign key (orderId) references ORDERX (orderId),
constraint ORDER_LINE_ITEM_FK2 foreign key (prodId) references PRODUCT (prodId)
);

Answer 1

For SQL Server one good way is to create a diagram in SSMS. As you place each table into the diagram the FK relationships will be rendered as lines between tables and primary keys will be displayed as "key" icons.