Study the data in the following table: The primary Key for the above table is a concatenated Key of ORDER_ID and PRODUCT_ID. Is this table in First Normal form? Study the data in the following table: The primary Key for the above table is a concatenated Key of ORDER_ID and PRODUCT_ID. Is this table in Second Normal form? In your table. you have a column QUARTER_NUMBER that identifies a calendar quarter of a year. The valid values for this column are 1, 2, 3, and 4. How can you insure in your database design that this column cannot store values other than 1, 2, 3, and 4? Define a NOT NULL constraint so that QUART R_NUMBER cannot store null values. Define a CHECK constraint to accept ony 1, 2, 3, and 4 as valid values for this column Define QUARTER_NUMBER as the Primary Key of the table You do not need to do anything, as the programmers will take care of it is It possible for a foreign key field of a table to have a NULL value