diff --git a/lib/far_mar/market.rb b/lib/far_mar/market.rb
index 7469f1e0..79555503 100644
--- a/lib/far_mar/market.rb
+++ b/lib/far_mar/market.rb
@@ -1,5 +1,46 @@
+require "pry"
+require "csv"
 module FarMar
   class Market
-  
+    attr_accessor :id, :name, :address, :city, :county, :state, :zip
+
+
+    def initialize(id, name, address, city, county, state, zip)
+      @id = id.to_i
+      @name = name
+      @address = address
+      @city = city
+      @county = county
+      @state = state
+      @zip = zip
+
+
+    end
+
+
+    def self.all
+      market_array = []
+      farmar_data = CSV.read("./support/markets.csv")
+      farmar_data.each do |csv|
+      @m = Market.new(csv[0], csv[1], csv[2], csv[3], csv[4], csv[5], csv[6])
+      market_array.push(@m)
+    end
+      return market_array
+    end
+
+    def self.find(id)
+      farmar_data = Market.all
+      farmar_data.find do |data|
+        if data.id == id
+          return data
+        end
+      end
+    end
+
+    def get_vendor
+      FarMar::Vendor.all.find_all do |vendor|
+        vendor.market_id == @id
+      end
+    end
   end
 end
diff --git a/lib/far_mar/product.rb b/lib/far_mar/product.rb
index 8efc48d2..b07bfa02 100644
--- a/lib/far_mar/product.rb
+++ b/lib/far_mar/product.rb
@@ -1,5 +1,63 @@
+require "pry"
+require "csv"
+
 module FarMar
   class Product
+    attr_accessor :id, :name, :vendor_id
+
+    def initialize (id, name, vendor_id)
+      @id = id.to_i
+      @name = name
+      @vendor_id = vendor_id.to_i
+    end
+
+    def self.all
+      product_array =[]
+      product_data = CSV.read("./support/products.csv")
+      product_data.each do |csv|
+      @p = Product.new(csv[0], csv[1],csv[2])
+      product_array.push(@p)
+    end
+    return product_array
+    end
+
+    def self.find(id)
+      product_data = Product.all
+      product_data.find do |data|
+          if data.id == id
+            return data
+          end
+        end
+    end
+
+    def get_vendor
+      FarMar::Vendor.all.find_all do |vendor|
+        vendor.id == @vendor_id
+      end
+    end
+
+    def get_sales
+      FarMar::Sale.all.find_all do |sale|
+        sale.vendor_id == @id
+      end
+    end
+
+    def number_of_sales
+      total = 0
+      FarMar::Sale.all.each do |each_sale|
+        if each_sale.product_id == id
+          total = total + 1
+        end
+      end
+      return total
+    end
+
+    def self.by_vendor(vendor_id)
+      self.all.find_all do |product|
+        product.vendor_id == vendor_id
+      end
+
+    end
 
   end
 end
diff --git a/lib/far_mar/sale.rb b/lib/far_mar/sale.rb
index 10e3780e..b80b0ebf 100644
--- a/lib/far_mar/sale.rb
+++ b/lib/far_mar/sale.rb
@@ -1,4 +1,57 @@
+require "pry"
+require "csv"
 module FarMar
   class Sale
+    attr_accessor :id, :amount, :purchase_time, :vendor_id, :product_id
+
+    def initialize (id, amount, purchase_time, vendor_id, product_id)
+      @id = id.to_i
+      @amount = amount.to_i
+      @purchase_time = DateTime.strptime(purchase_time, "%Y-%m-%d %H:%M:%S %z")
+      @vendor_id = vendor_id.to_i
+      @product_id = product_id.to_i
+    end
+
+    def self.all
+      sale_array = []
+      sale_data = CSV.read("./support/sales.csv")
+      sale_data.each do |csv|
+        @s = Sale.new(csv[0], csv[1], csv[2], csv[3], csv[4])
+        sale_array.push(@s)
+      end
+      return sale_array
+    end
+
+    def self.find(id)
+      sale_data = Sale.all
+      sale_data.find do |data|
+        if data.id == id
+          return data
+        end
+      end
+    end
+    def get_vendor
+      FarMar::Vendor.all.find_all do |vendor|
+        vendor.id == @vendor_id
+      end
+    end
+
+    def get_product
+      FarMar::Product.all.each do |product|
+        if product.id == product_id
+          return product
+        end
+      end
+    end
+
+  def self.between(beginning_time, end_time)
+    array = []
+    self.all.find_all do |sale_times|
+      if sale_times.purchase_time >= beginning_time && sale_times.purchase_time <= end_time
+      array.push(sale_times)
+      end
+    end
+    return array
+  end
   end
 end
diff --git a/lib/far_mar/vendor.rb b/lib/far_mar/vendor.rb
index bfe19c33..9b8a61f4 100644
--- a/lib/far_mar/vendor.rb
+++ b/lib/far_mar/vendor.rb
@@ -1,5 +1,69 @@
+require "pry"
+require "csv"
+
 module FarMar
   class Vendor
+    attr_accessor :id, :name, :no_of_employees, :market_id
+
+    def initialize (id, name, no_of_employees, market_id)
+      @id = id.to_i
+      @name = name
+      @no_of_employees = no_of_employees.to_i
+      @market_id = market_id.to_i
+    end
+
+    def self.all
+      vendor_array = []
+      vendor_data = CSV.read("./support/vendors.csv")
+      vendor_data.each do |csv|
+      @v = Vendor.new(csv[0], csv[1], csv[2], csv[3])
+      vendor_array.push(@v)
+      end
+    return vendor_array
+    end
+
+    def self.find(id)
+      vendor_data = Vendor.all
+      vendor_data.find do |data|
+        if data.id == id
+          return data
+        end
+      end
+    end
+
+    def get_market
+      FarMar::Market.all.find do |market|
+        market.id == @market_id
+      end
+    end
+
+    def get_products
+      FarMar::Product.all.find_all do |product|
+        product.vendor_id == @id
+      end
+    end
+
+    def get_sales
+      FarMar::Sale.all.find_all do |sale|
+        sale.vendor_id == @id
+      end
+    end
+
+    def revenue
+      total = 0
+      get_sales.each do |sale|
+        total = total + sale.amount
+      end
+      return total
+    end
+
+    def self.by_market(market_id)
+      FarMar::Vendor.all.find_all do |vendor|
+        vendor.market_id == market_id
+
+      end
+  
 
+    end
   end
 end
diff --git a/spec/far_mar/market_spec.rb b/spec/far_mar/market_spec.rb
index 204b458c..fccbbf80 100644
--- a/spec/far_mar/market_spec.rb
+++ b/spec/far_mar/market_spec.rb
@@ -2,7 +2,7 @@
 
 describe FarMar::Market do
   before :each do
-    @market = FarMar::Market.new
+    @market = FarMar::Market.new("id","name","city","county","state","zip","address")
 end
 
   describe "new market instance" do
@@ -10,4 +10,25 @@
       expect(@market).to be_an_instance_of FarMar::Market
     end
   end
+
+
+
+  describe "return a collection of market instances described in CVS" do
+    it "returns all of the accounts" do
+      expect(FarMar::Market.all).to be_an_instance_of Array
+    end
+  end
+
+  describe "return one account" do
+    it "returns one account" do
+      expect(FarMar::Market.find(1).id).to eq 1
+    end
+  end
+
+  describe ".get_vendor" do
+    it "returns all accounts with same market id" do
+      expect(@market.get_vendor).to be_an Array
+    end
+  end
+
 end
diff --git a/spec/far_mar/product_spec.rb b/spec/far_mar/product_spec.rb
index 5cd77cc9..a86c267a 100644
--- a/spec/far_mar/product_spec.rb
+++ b/spec/far_mar/product_spec.rb
@@ -2,12 +2,45 @@
 
 describe FarMar::Product do
   before :each do
-    @product = FarMar::Product.new
+    @product = FarMar::Product.new("1", "name", "1")
 end
 
-  describe "new product instance; .new" do
+
+  describe "new product instance" do
     it "creats a new product instance" do
       expect(@product).to be_an_instance_of FarMar::Product
     end
   end
+
+
+  describe "return a collection of product instances described in CVS" do
+    it "returns all of the accounts" do
+      expect(FarMar::Product.all).to be_an_instance_of Array
+    end
+  end
+
+  describe "return one account" do
+    it "returns one account" do
+      expect(FarMar::Product.find(1).id).to eq 1
+    end
+  end
+
+  describe "get_vendor" do
+    it "returns all account with the same vendor id" do
+      expect(@product.get_vendor).to be_an Array
+    end
+  end
+
+  describe "number_of_sales" do
+    it "returns the number of the product has been sold" do
+     expect(@product.number_of_sales).to eq 7
+    end
+  end
+
+  describe "self.by_vendor" do
+    it "returns returns all of the products with the given vendor_id" do
+    expect(FarMar::Product.all.find_all)
+  end
+end
+
 end
diff --git a/spec/far_mar/sale_spec.rb b/spec/far_mar/sale_spec.rb
index e1a7aa52..d926ff52 100644
--- a/spec/far_mar/sale_spec.rb
+++ b/spec/far_mar/sale_spec.rb
@@ -2,7 +2,7 @@
 
 describe FarMar::Sale do
   before :each do
-    @sale = FarMar::Sale.new
+    @sale = FarMar::Sale.new("id", "amount", "purchase_time", "vendor_id", "product_id")
 end
 
   describe "new sale instance" do
@@ -10,4 +10,28 @@
       expect(@sale).to be_an_instance_of FarMar::Sale
     end
   end
+  describe "return a collection of sale instances described in CVS" do
+    it "returns all of the accounts" do
+      expect(FarMar::Sale.all).to be_an_instance_of Array
+    end
+  end
+
+  describe "return one account" do
+    it "returns one account" do
+      expect(FarMar::Sale.find(1).id).to eq 1
+    end
+  end
+
+  describe "get_vendor" do
+    it "returns vendor instance ralated to sale" do
+      expect(@sale.get_vendor).to be_an Array
+      end
+    end
+
+  describe "get_product" do
+    it "returns product instance related to sale" do
+      expect(@sale.get_product). to be_an Array
+    end
+  end
+
 end
diff --git a/spec/far_mar/vendor_spec.rb b/spec/far_mar/vendor_spec.rb
index fb7ee7b9..cb0a4d2e 100644
--- a/spec/far_mar/vendor_spec.rb
+++ b/spec/far_mar/vendor_spec.rb
@@ -2,7 +2,7 @@
 
 describe FarMar::Vendor do
   before :each do
-    @vendor = FarMar::Vendor.new
+    @vendor = FarMar::Vendor.new("1","Feil-Farrell","8","1")
 end
 
   describe "new vendor instance" do
@@ -10,4 +10,49 @@
       expect(@vendor).to be_an_instance_of FarMar::Vendor
     end
   end
+
+
+    describe "return a collection of market instances described in CVS" do
+      it "returns all of the accounts" do
+        expect(FarMar::Vendor.all).to be_an_instance_of Array
+      end
+    end
+
+    describe "return one account" do
+      it "returns one account" do
+        expect(FarMar::Vendor.find(1).id).to eq 1
+      end
+    end
+
+
+    describe ".get_market" do
+      it "returns all accounts with the same market id" do
+        expect(@vendor.get_market).to be_an_instance_of FarMar::Market
+      end
+    end
+
+
+    describe ".get_products" do
+      it "returns all accounts with the same vendor id" do
+        expect(@vendor.get_products).to be_an_instance_of Array
+      end
+    end
+
+    describe ".get_sales" do
+      it "returns all accounts with the vendor id" do
+        expect(@vendor.get_sales).to be_an_instance_of Array
+      end
+    end
+
+    describe "revenue" do
+      it "returns the amount of vendor sales in cents" do
+      expect(@vendor.revenue).to eq 38259
+    end
+
+    describe ".by_market" do
+      it "returns all of the vendors with the given market_id" do
+        expect(FarMar::Vendor.by_market(2)).to be_an_instance_of Array
+      end
+    end
+  end
 end
diff --git a/support/products.csv b/support/products.csv
index 92794f1c..2cd50214 100644
--- a/support/products.csv
+++ b/support/products.csv
@@ -23,7 +23,7 @@
 23,Calm Carrots,10
 24,Fierce Beef,10
 25,Helpless Bread,10
-26,Yummy Bread,10
+26,Yummy Bread,10   
 27,Broken Beets,10
 28,Quiet Honey,11
 29,Crazy Fish,11