Create database diagram and text based document explaining the relationship mapping

Create a diagram using a diagramming tool AND provide a written text-based document explaining your relationship mapping (systems analysis use case document).

Requirements:

• You will work with book/music/media information, user information, ratings of books, and users’ social network
• Each book has an id, title, publication date, publisher, ISBN, functional category, page count, price (publisher), and product description
• There are 3 categories of book: fiction, non-fiction, and specialty
• There are 2 categories of music: digital and media-based
• An author can write one or more books.
• A musician can be a solo artist, part of a group, or both
• An author can also be associated with one or more publishers.
• A musician/group/act can be associated with one or more record labels (consider this a possible type of publisher)
• An author’s book can have one or more editions.
• A song and or album can have more than one version/edition (i.e. EP, LP, CD, DVD etc)
• A publisher can have many authors and many books.
• A record company can have many artists associated and many albums associated with it. 
• A record company can also be the publishing company (i.e. self-publishing - i.e. think Amazon)
• Many ISBNs can also be associated with a given publisher but only one ISBN per form of medium (i.e. the ISBN is the PK no matter what).
• An author can write many books.
• An artist can write many songs, albums etc.
• UCOnline needs to keep track of user ratings for each item sold in the online store (e.g., 1-5 and 1 for ‘Dislike’, to 5, for ‘Awesome!’).
• A particular user rates a particular item at a given time.
• A user CANNOT rate the same item multiple times unless there are multiple editions of the item.
• Each edition can be rated separately.
• Each user who submits a rating will be identified by a unique id and has a name, gender, age, and location. Nothing is anonymous.