$3.$ Convert the M:N relationship below into $1$:M relationships. List the relational schema for

the entities $($you can add attributes to each entity$).$ For each entity, clearly indicate

the primary key and foreign key, if any $(6$ points$).$

An author may write several books, and a book may have several authors.

$4.$ Given the following relational tables, answer the questions:

Table name: BOOTH Table name: MACHINE

$(1)$ Create the table that results from applying a UNION relational operator to the two

tables BOOTH and MACHINE $(2$ points$).$