agenda.txt

1. REST Architecture
2. express.js
    books and authors


REST ----> Http protocol.

1. stateless
2. resource resolution
3. status codes -- 200, 400, 500, 300, 100 ..
4. methods





1. getAllBooks() <---> /books
2. getBookById(id) <----> /books/:id
3. getAllAuthors() <----> /authors
4. getAuthorById(id) <-----> /authors/:id
6. getAuthorByBookId(id) <----> books/:id/author


{
    name: 'chacha chaudhary',
    id: 1
    author: {

    }
}


{
    name: 'pritam',
    id: 6,
    books: [
        {

        },
        {

        }
    ]
}



Homework

1. remove duplicates from getAllAuthors
2. apply filter to get book by name
3. update a book ---> PUT



queryParameters



app.use(filter);
    - username, password in headers
    - filters 


make use of queryParameters

1. book.name=shiva triology&book.ratings=5



-- joins in sequelize
-- MVC -> Model View Controller


-- hasOne
-- hasMany
-- belongsTo
-- belongsToMany


orders
user_id




user
id


user hasMany orders
orders belongsTo users



Males
id  name  married_to
            2





Females
id name