NoSQL with MongoDB and Ruby Presentation

// insert data
db.factories.insert( { name: "Miller", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Lakefront", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Point", metro: { city: "Steven's Point", state: "WI" } } );
db.factories.insert( { name: "Pabst", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Blatz", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Coors", metro: { city: "Golden Springs", state: "CO" } } );
// simple queries
db.factories.find()
db.factories.findOne()
db.factories.find( { "metro.city" : "Milwaukee" } )
db.factories.find( { "metro.state": {$in : ["WI", "CO"] } } )
// update data
db.factories.update( { name: "Lakefront"}, { $set : { thebest : true } } );
db.factories.find()
// delete data
db.factories.remove({name:"Coors"})
db.factories.remove()

require 'rubygems'
require 'mongo'
include Mongo
db   = Connection.new.db('sample-db')
coll = db.collection('factories')
coll.remove
coll.insert( { :name => "Miller",    :metro => { :city => "Milwaukee", :state => "WI" } } )
coll.insert( { :name => "Lakefront", :metro => { :city: "Milwaukee", :state => "WI" } } )
coll.insert( { :name => "Point",     :metro => { :city => "Steven's Point", :state => "WI" } } )
coll.insert( { :name => "Pabst",     :metro => { :city => "Milwaukee", :state => "WI" } } )
coll.insert( { :name => "Blatz",     :metro => { :city => "Milwaukee", :state => "WI" } } )
coll.insert( { :name => "Coors",     :metro => { :city => "Golden Springs", :state => "CO" } } )
puts "There are #{coll.count()} factories. Here they are:"
coll.find().each { |doc| puts doc.inspect }
coll.map_reduce("function () { emit(this.metro.city, this.name); }", "function (k, vals) { return vals.join(","); }").each { |r| puts r.inspect }

db.factories.insert( { name: "Miller", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Lakefront", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Point", metro: { city: "Steven's Point", state: "WI" } } );
db.factories.insert( { name: "Pabst", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Blatz", metro: { city: "Milwaukee", state: "WI" } } );
db.factories.insert( { name: "Coors", metro: { city: "Golden Springs", state: "CO" } } );
var fmap = function () {
    emit(this.metro.city, this.name);
}
var fred = function (k, vals) {
    return vals.join(",");
}
res = db.factories.mapReduce(fmap, fred)
db[res.result].find()
db[res.result].drop()