$1\mathrm{.}1.$ Is it possible to collect data on employee types other than librarian and clerk?

Discuss your answer. $(1$ pts $)$

$1\mathrm{.}2.$ Can disk be a book at the same time? Discuss your answer. $(1$pts$)$

$1\mathrm{.}3.$ Please describe the Overlap rule and Disjoint Rule for the above example. $(1$pts$)$

$1\mathrm{.}4.$ Can Clerk perform checkouts? Explain your answer $(1$pts$)$

$1\mathrm{.}5.$ Explain the supertype and subtypes of all the entities. $(1$pts$)$