What constraints would the following code obviously violate if any (there may be none in which case write none, or more than one.) ?

a. INSERT INTO BOOK (ISBN, BookName, AuthorID, Type) VALUES (Null, 1984, 190, Fiction)

b. INSERT INTO AUTHOR (AuthorID, AuthorName) VALUES (10, Arthur C. Clarke)

c. INSERT INTO AUTHOR (AuthorID, AuthorName) VALUES (15, Dodie Smith)

d. INSERT INTO BOOK (ISBN, BookName, AuthorID, Type) VALUES (5, Emma, 10, Fiction)

e. DELETE FROM AUTHOR WHERE AuthorID = 12 f. DELETE FROM AUTHOR WHERE AuthorID = 14

g. UPDATE AUTHOR SET AUTHORNAME = Jane Austen WHERE AuthorID = 10

BOOK ISBN : int BookName : varchar(50) Pride and Prejudice The Call of the Wild White Fang in Cold Blood AuthoriD : int 10 12 12 13 Type : varchar(20) Fiction Fiction Fiction Non-Fiction 4 AUTHOR AuthorID : int 10 12 13 AuthorName : varchar(50) Jane Austin Jack London Truman Capote Charlotte Bronte There is a Foreign Key (FK) in BOOK for Authorld to the Primary key of Author