Each question is worth $10$ points each. Convert the following textual description to an

entity$-$relationship diagram in UML notation. Please spend time differentiating between entities,

attributes, relationships and values of attributes. If you are identifying a strong entity $-$ make sure you

identify a primary key for it$.$ Remember, weak entities do not have a primary key. You are not required

to use superclass$/$subclass hierarchy for any of these problems, but may choose to do so if you wish.

A website has a unique URL, a title, a company it is associated with and the creator of the

website.

A website has a URL, a title, and the creator of the website. A website is associated with $1$

company and a company is associated with $1$ to many websites. A company has a unique name,

a business genre $($such as financial, commercial, non$-$profit etc.$),$ and an address that is

composed of a street number, street name, town, state, zip code.

A website has a URL, a title, and the creator of the website. A website is associated with $1$

company and a company is associated with $1$ to many websites. A company has a unique name,

a business genre $($such as financial, commercial, non$-$profit etc.$),$ and an address that is

composed of a street number, street name, town, state, zip code. Each website has a collection

of valid users. For each user, we track their user name, the password, their full name and their

country of origin. A user is associated with $1$ and only $1$ website, the user name is only unique

for that specific website. A website can have $0$ to many users that have logged in or are logged

in$.$ When a user logs into a website we track the date and time of the login$.$

A website has a URL, and a title. A website is associated with $1$ company and a company is

associated with $1$ to many websites. A company has a unique name, a business genre $($such as

financial, commercial, non$-$profit etc.$),$ and an address that is composed of a street number,

street name, town, state, zip code. A company employs staff members. For each staff member

we track the unique staff id$,$ their full name $($first and last$),$ and department. A staff member

creates $0$ to many websites for their company. A website is created by $1$ staff member. Each

website has a collection of valid users. For each user, we track their user name, the password,

their full name and their country of origin. A user is associated with $1$ and only $1$ website, the

user name is only unique for that specific website. A website can have $0$ to many users that

have logged in or are logged in$.$ When a user logs into a website we track the date and time of

the login$.$