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postgres=#
postgres=# -- Foreign Keys
postgres=#
postgres=# CREATE TABLE products (
postgres(# product_no integer PRIMARY KEY,
postgres(# name text,
postgres(# price numeric
postgres(# );
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "products_pkey" for table "products"
CREATE TABLE
postgres=#
postgres=# CREATE TABLE orders (
postgres(# order_id integer PRIMARY KEY,
postgres(# product_no integer REFERENCES products (product_no),
postgres(# quantity integer
postgres(# );
NOTICE: CREATE TABLE / PRIMARY KEY will create implicit index "orders_pkey" for table "orders"
CREATE TABLE
postgres=#
postgres=# drop table products cascade;
NOTICE: drop cascades to constraint orders_product_no_fkey on table orders
DROP TABLE
postgres=# drop table orders cascade;
DROP TABLE
postgres=#
postgres=#
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