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. You are not required to use superclass subclass hierarchy for any of these problems, but may choose to do so if you wish. 1. A book has a title, an ISBN number (a unique international book number), a publisher, a language it was written in, the total number of pages and an author's name. 2. A book has a title, an ISBN number (a unique international book number), a publisher, a language it was written in, and the total number of pages. An author has a name and a place of origin. A book is written by one to many authors and an author writes 1 to many books. 3. A book has a title, an ISBN number (a unique international book number), a language it was written in, and the total number of pages. An author has a name and a place of origin. A publisher has a name, a city and a country. A book is written by 1 to many authors. A publisher releases 1 to many books. A book can be released by one to many publishers. When a book is released by a publisher, there is a publication date. 4. A laptop has a unique serial number and is associated with a specific manufacturer and a model for that manufacturer. Each laptop is associated with exactly 1 manufacturer and 1 model for that manufacturer. A manufacturer has a unique name. A manufacturer can produce 1 to many laptop models. A model name is unique for a specific manufacturer but is not unique across all manufacturers. A model name is associated with at least 1 manufacturer. 5. A laptop has a unique serial number and is associated with a specific manufacturer and a model for that manufacturer. Each laptop is associated with exactly 1 manufacturer and 1 model for that manufacturer. A manufacturer has a unique name. A manufacturer can produce 1 to many laptop models. A model does not have a unique name but is associated with at least 1 manufacturer. An electronic store has a unique name and a unique address that consists of a street number, street address, town, state and zip code. An electronic store stocks I to many laptops but a laptop can only be found at 1 and only 1 store. 6. A laptop has a unique serial number and is associated with a specific manufacturer and a model for that manufacturer. Each laptop is associated with exactly 1 manufacturer and 1 model for that manufacturer. A manufacturer has a unique name. A manufacturer can produce 1 to many laptop models. A model does not have a unique name but is associated with at least 1 manufacturer. An electronic store has a unique name and a unique address that consists of a street number, street address, town, state and zip code. An electronic store stocks 1 to many laptops but a laptop can only be found at 1 and only 1 store. A customer consists of a name, and a unique credit card number. A customer buys a laptop at a store. A laptop can be bought by at most one customer but a customer may buy 0 to many laptops.