diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 00000000..d186e0d8
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,5 @@
+FROM node:8.14.0-alpine
+COPY . /root
+RUN npm install express mysql
+CMD node /root/index.js
+EXPOSE 3000
diff --git a/answers.md b/answers.md
index b7025b97..e32b58a2 100644
--- a/answers.md
+++ b/answers.md
@@ -1,41 +1,59 @@
 # Answers
 
-Lastname:
-Firstname:
+YU:Daniel:
 
 ## 2.2
-command:
+command:sudo docker run app
 
 ## 2.3
-question:
-command:
+question:the port is not opened
+command:sudo docker run -p 3000:3000 app
 
 ## 2.5
-question:
-command:
+question:We have to name the tag of the image to match the repository.
+command:sudo docker login
+	sudo docker tag app yudada31/devops_lab
+	sudo docker push yudada31/devops_lab
 
 ## 2.6
-command:
+command:sudo docker prune -a
 
-question:
-command:
+question:First, we need to pull the image: "sudo docker pull yudada31/devops_lab".
+	 Then start a container again with the name I pushed on Docker hub
+command:sudo docker create yudada31/devops_lab
 
-command:
+command:sudo docker run --detach yudada31/devops_lab
 
 ## 2.7
-question:
-question:
-command:
+question:by running the command "sudo docker ps -a", we can get a list of the container with its IDs, names, status and other informations. The status is up.
+question:The name of the container is modest_feynman.
+command:sudo docker ps -a
 
-command:
+command:sudo docker rename modest-feynman web_API
 
 ## 2.8
-question:
-output:
+question:The OS of the container is Ubuntu.
+output:DISTRIB_ID=Ubuntu
+DISTRIB_RELEASE=18.04
+DISTRIB_CODENAME=bionic
+DISTRIB_DESCRIPTION="Ubuntu 18.04.1 LTS"
+NAME="Ubuntu"
+VERSION="18.04.1 LTS (Bionic Beaver)"
+ID=ubuntu
+ID_LIKE=debian
+PRETTY_NAME="Ubuntu 18.04.1 LTS"
+VERSION_ID="18.04"
+HOME_URL="https://www.ubuntu.com/"
+SUPPORT_URL="https://help.ubuntu.com/"
+BUG_REPORT_URL="https://bugs.launchpad.net/ubuntu/"
+PRIVACY_POLICY_URL="https://www.ubuntu.com/legal/terms-and-policies/privacy-policy"
+VERSION_CODENAME=bionic
+UBUNTU_CODENAME=bionic
+
 
 ## 3.1
-command:
+command:sudo docker-compose up
 
 ## 3.4
-command:
-command:
+command:sudo docker-compose up -d
+command:sudo docker-compose logs
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 00000000..d3dd6931
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,4 @@
+version: '3'
+services:
+  my-service:
+    image: yudada31/devops_lab
diff --git a/express.js b/express.js
new file mode 100644
index 00000000..594007b5
--- /dev/null
+++ b/express.js
@@ -0,0 +1,114 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+'use strict';
+
+/**
+ * Module dependencies.
+ */
+
+var bodyParser = require('body-parser')
+var EventEmitter = require('events').EventEmitter;
+var mixin = require('merge-descriptors');
+var proto = require('./application');
+var Route = require('./router/route');
+var Router = require('./router');
+var req = require('./request');
+var res = require('./response');
+
+/**
+ * Expose `createApplication()`.
+ */
+
+exports = module.exports = createApplication;
+
+/**
+ * Create an express application.
+ *
+ * @return {Function}
+ * @api public
+ */
+
+function createApplication() {
+  var app = function(req, res, next) {
+    app.handle(req, res, next);
+  };
+
+  mixin(app, EventEmitter.prototype, false);
+  mixin(app, proto, false);
+
+  // expose the prototype that will get set on requests
+  app.request = Object.create(req, {
+    app: { configurable: true, enumerable: true, writable: true, value: app }
+  })
+
+  // expose the prototype that will get set on responses
+  app.response = Object.create(res, {
+    app: { configurable: true, enumerable: true, writable: true, value: app }
+  })
+
+  app.init();
+  return app;
+}
+
+/**
+ * Expose the prototypes.
+ */
+
+exports.application = proto;
+exports.request = req;
+exports.response = res;
+
+/**
+ * Expose constructors.
+ */
+
+exports.Route = Route;
+exports.Router = Router;
+
+/**
+ * Expose middleware
+ */
+
+exports.json = bodyParser.json
+exports.query = require('./middleware/query');
+exports.static = require('serve-static');
+exports.urlencoded = bodyParser.urlencoded
+
+/**
+ * Replace removed middleware with an appropriate error message.
+ */
+
+var removedMiddlewares = [
+  'bodyParser',
+  'compress',
+  'cookieSession',
+  'session',
+  'logger',
+  'cookieParser',
+  'favicon',
+  'responseTime',
+  'errorHandler',
+  'timeout',
+  'methodOverride',
+  'vhost',
+  'csrf',
+  'directory',
+  'limit',
+  'multipart',
+  'staticCache'
+]
+
+removedMiddlewares.forEach(function (name) {
+  Object.defineProperty(exports, name, {
+    get: function () {
+      throw new Error('Most middleware (like ' + name + ') is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware.');
+    },
+    configurable: true
+  });
+});
diff --git a/index.js b/index.js
new file mode 100644
index 00000000..f06bf256
--- /dev/null
+++ b/index.js
@@ -0,0 +1,617 @@
+/*!
+ * express
+ * Copyright(c) 2009-2013 TJ Holowaychuk
+ * Copyright(c) 2013 Roman Shtylman
+ * Copyright(c) 2014-2015 Douglas Christopher Wilson
+ * MIT Licensed
+ */
+
+
+
+'use strict';
+
+const express = require('express');
+const mysql = require('mysql');
+const bodyParser = require('body-parser');
+const app = express();
+const dhost = process.env.MYSQL_HOST;
+const dport = process.env.MYSQL_PORT;
+const ddatabase = process.env.MYSQL_DATABASE;
+const dlogin = process.env.MYSQL_LOGIN;
+const dpassword = process.env.MYSQL_PASSWORD;
+
+app.use(bodyParser.urlencoded({
+    extended: true
+}));
+
+var db = mysql.createConnection({
+    host: MYSQL_HOST,
+    user: MYSQL_LOGIN,
+    password: MYSQL_PASSWORD,
+    database: MYSQL_DATABASE,
+    port: MYSQL_PORT
+    
+});
+
+///Firewall////
+ app.use(function(req, res, next) {
+ 	if ("key" in req.query) {
+ 		var key = req.query["key"];
+ 		var query = "SELECT * FROM users WHERE apikey='" + key + "'";
+ 		db.query(query, function(err, result, fields) {
+ 			if (err) throw err;
+ 			if (result.length > 0) {
+ 				next();
+ 			}
+ 			else {
+                 res.status(403).send("Access denied").end();
+ 			}
+ 		});
+ 	} else {
+         res.status(403).send("Access denied").end();
+ 	}
+ });
+
+
+// Query calculate days left before no more food
+app.get('/food-stats', function (req, res) {
+
+    db.query("SELECT A.name FROM animals A JOIN food F on A.id = F.id", function (err, result, fields) {
+        if (err) throw err;
+
+        var name = result[0].name;
+
+        db.query("SELECT F.quantity FROM animals A JOIN food F on A.id = F.id", function (err, result, fields) {
+            if (err) throw err;
+
+            var quantity = result[0].quantity;
+
+            db.query("SELECT A.food FROM animals A JOIN food F on A.id = F.id", function (err, result, fields) {
+                if (err) throw err;
+
+                var food = result[0].food;
+
+                var response = {
+                    "Name": name,
+                    "Remaining_time": (quantity / food)
+                };
+                res.send(JSON.stringify(response));
+            });
+        });
+    });
+});
+
+
+/// POST FOR ANIMAL
+app.post('/animals', function (req, res) {
+    var name = req.body.name;
+    var breed = req.body.breed;
+    var food_per_day = req.body.food_per_day;
+    var birthday = req.body.birthday;
+    var entry_date = req.body.entry_date;
+    var id_cage = req.body.id_cage;
+
+    var query = "INSERT INTO animals (`name`, `breed`, `food_per_day`, `birthday`, `entry_date`, `id_cage`) VALUES ('" + name + "', '" + breed + "', '" + food_per_day + "', '" + birthday + "', '" + entry_date + "', '" + id_cage + "')";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+/// POST FOR CAGE
+app.post('/cages', function (req, res) {
+    var name = req.body.name;
+    var desc = req.body.description;
+    var area = req.body.area;
+
+    var query = "INSERT INTO cages (`name`, `description`, `area`) VALUES ('" + name + "', '" + desc + "', '" + area + "')";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+///POST FOR FOOD
+app.post('/food', function (req, res) {
+    var name = req.body.name;
+    var aid = req.body.id_animal;
+    var quantity = req.body.quantity;
+
+    var query = "INSERT INTO food (`name`, `id_animal`, `quantity`) VALUES ('" + name + "', '" + aid + "', '" + quantity + "')";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+///POST FOR STAFF
+app.post('/staff', function (req, res) {
+    var fname = req.body.firstname;
+    var lname = req.body.lastname;
+    var sal = req.body.wage;
+
+    var query = "INSERT INTO staff (`firstname`, `lastname`, `wage`) VALUES ('" + fname + "', '" + lname + "', '" + sal + "')";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+////////////RELATIONSHIPS BETWEEN ANIMALs AND FOOD////////
+app.get('/animals/:id/food', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT food.id, food.name, food.quantity FROM animals INNER JOIN food ON animals.id = food.id_animal WHERE animals.id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+app.get('/animals/:id/food/:fid', function (req, res) {
+    var AID = req.params.id;
+    var FID = req.params.fid;
+    var query = "SELECT food.id, food.name, food.quantity FROM animals INNER JOIN food ON animals.id = food.id_animal WHERE animals.id=" + AID + " AND food.id=" + FID;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+///reverse///
+app.get('/food/:id/animals', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT animals.id, animals.name, animals.breed, animals.food_per_day, animals.birthday, animals.entry_date, animals.id_cage FROM animals INNER JOIN food ON animals.id = food.id_animal WHERE food.id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+app.get('/food/:id/animals/:aid', function (req, res) {
+    var AID = req.params.aid;
+    var FID = req.params.id;
+    var query = "SELECT animals.id, animals.name, animals.breed, animals.food_per_day, animals.birthday, animals.entry_date, animals.id_cage FROM animals INNER JOIN food ON animals.id = food.id_animal WHERE animals.id=" + AID + " AND food.id=" + FID;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+////////////RELATIONSHIPS BETWEEN ANIMALs AND CAGE////////
+app.get('/animals/:id/cages', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT cages.id, cages.name, cages.description, cages.area FROM animals INNER JOIN cages ON animals.id_cage = cages.id WHERE animals.id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+app.get('/animals/:id/cages/:cid', function (req, res) {
+    var AID = req.params.id;
+    var CID = req.params.cid;
+    var query = "SELECT cages.id, cages.name, cages.description, cages.area FROM animals INNER JOIN cages ON animals.id_cage = cages.id WHERE animals.id=" + AID + " AND cages.id=" + CID;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+//////reverse/////
+app.get('/cages/:id/animals', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT animals.id, animals.name, animals.breed, animals.food_per_day, animals.birthday, animals.entry_date, animals.id_cage FROM animals INNER JOIN cages ON animals.id_cage = cages.id WHERE cages.id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+app.get('/cages/:id/animals/:aid', function (req, res) {
+    var AID = req.params.id;
+    var CID = req.params.aid;
+    var query = "SELECT animals.id, animals.name, animals.breed, animals.food_per_day, animals.birthday, animals.entry_date, animals.id_cage FROM animals INNER JOIN cages ON animals.id_cage = cages.id WHERE animals.id=" + AID + " AND cages.id=" + CID;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+///GET FOR ANIMAL
+app.get('/animals', function (req, res) {
+    var query = "SELECT * FROM animals";
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date"];
+
+    if ("fields" in req.query) {
+        query = query.replace("*", req.query["fields"]);
+    }
+
+    for (var index in conditions) {
+        if (conditions[index] in req.query) {
+            if (query.indexOf("WHERE") < 0) {
+                query += " WHERE";
+            } else {
+                query += " AND";
+            }
+            query += " " + conditions[index] + " = '" + req.query[conditions[index]] + "' ";
+        }
+    }
+
+    if ("sort" in req.query) {
+        var sort = req.query["sort"].split(",");
+        query += " ORDER BY";
+        for (var index in sort) {
+            var direction = sort[index].substr(0, 1);
+            var field = sort[index].substr(1);
+            query += " " + field;
+            if (direction == "-")
+                query += " DESC,";
+            else
+                query += " ASC,";
+        }
+        query = query.slice(0, -1);
+    }
+
+    if ("limit" in req.query) {
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query) {
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+///GET FOR CAGE
+app.get('/cages', function (req, res) {
+    var query = "SELECT * FROM cages"
+    var conditions = ["name", "description", "area"];
+    if ("fields" in req.query) {
+        query = query.replace("*", req.query["fields"]);
+    }
+
+    for (var index in conditions) {
+        if (conditions[index] in req.query) {
+            if (query.indexOf("WHERE") < 0) {
+                query += " WHERE";
+            } else {
+                query += " AND";
+            }
+            query += " " + conditions[index] + " = '" + req.query[conditions[index]] + "' ";
+        }
+    }
+
+    if ("sort" in req.query) {
+        var sort = req.query["sort"].split(",");
+        query += " ORDER BY";
+        for (var index in sort) {
+            var direction = sort[index].substr(0, 1);
+            var field = sort[index].substr(1);
+            query += " " + field;
+            if (direction == "-")
+                query += " DESC,";
+            else
+                query += " ASC,";
+        }
+        query = query.slice(0, -1);
+    }
+
+    if ("limit" in req.query) {
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query) {
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+///GET FOR FOOD
+app.get('/food', function (req, res) {
+    var query = "SELECT * FROM food";
+    var conditions = ["name", "id_animal", "quantity"];
+    if ("fields" in req.query) {
+        query = query.replace("*", req.query["fields"]);
+    }
+
+    for (var index in conditions) {
+        if (conditions[index] in req.query) {
+            if (query.indexOf("WHERE") < 0) {
+                query += " WHERE";
+            } else {
+                query += " AND";
+            }
+            query += " " + conditions[index] + " = '" + req.query[conditions[index]] + "' ";
+        }
+    }
+
+    if ("sort" in req.query) {
+        var sort = req.query["sort"].split(",");
+        query += " ORDER BY";
+        for (var index in sort) {
+            var direction = sort[index].substr(0, 1);
+            var field = sort[index].substr(1);
+            query += " " + field;
+            if (direction == "-")
+                query += " DESC,";
+            else
+                query += " ASC,";
+        }
+        query = query.slice(0, -1);
+    }
+
+    if ("limit" in req.query) {
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query) {
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+///GET FOR STAFF
+app.get('/staff', function (req, res) {
+    var query = "SELECT * FROM staff";
+    var conditions = ["firstname ", "lastname", "wage"];
+
+    if ("fields" in req.query) {
+        query = query.replace("*", req.query["fields"]);
+    }
+
+    for (var index in conditions) {
+        if (conditions[index] in req.query) {
+            if (query.indexOf("WHERE") < 0) {
+                query += " WHERE";
+            } else {
+                query += " AND";
+            }
+            query += " " + conditions[index] + " = '" + req.query[conditions[index]] + "' ";
+        }
+    }
+
+    if ("sort" in req.query) {
+        var sort = req.query["sort"].split(",");
+        query += " ORDER BY";
+        for (var index in sort) {
+            var direction = sort[index].substr(0, 1);
+            var field = sort[index].substr(1);
+            query += " " + field;
+            if (direction == "-")
+                query += " DESC,";
+            else
+                query += " ASC,";
+        }
+        query = query.slice(0, -1);
+    }
+
+    if ("limit" in req.query) {
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query) {
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+
+///PUT FOR ANIMAL	
+app.put('/animals/:id', function (req, res) {
+    var id = req.params.id;
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date"];
+    var query = "UPDATE animals ";
+    for (var index in conditions) {
+        if (conditions[index] in req.body) {
+            if (query.indexOf("SET") < 0) {
+                query += "SET ";
+            } else {
+                query += ", ";
+            }
+            query += " " + conditions[index] + " = '" + req.body[conditions[index]] + "' ";
+        }
+
+    }
+    query += " WHERE id = '" + id + "'";
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+///PUT FOR cage	
+app.put('/cages/:id', function (req, res) {
+    var id = req.params.id;
+    var conditions = ["name", "description", "area"];
+    var query = "UPDATE cages ";
+    for (var index in conditions) {
+        if (conditions[index] in req.body) {
+            if (query.indexOf("SET") < 0) {
+                query += "SET ";
+            } else {
+                query += ", ";
+            }
+            query += " " + conditions[index] + " = '" + req.body[conditions[index]] + "' ";
+        }
+
+    }
+    query += " WHERE id = '" + id + "'";
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+///PUT FOR food	
+app.put('/food/:id', function (req, res) {
+    var id = req.params.id;
+    var conditions = ["name", "id_animal", "quantity"];
+    var query = "UPDATE food ";
+    for (var index in conditions) {
+        if (conditions[index] in req.body) {
+            if (query.indexOf("SET") < 0) {
+                query += "SET ";
+            } else {
+                query += ", ";
+            }
+            query += " " + conditions[index] + " = '" + req.body[conditions[index]] + "' ";
+        }
+
+    }
+    query += " WHERE id = '" + id + "'";
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+///PUT FOR staff	
+app.put('/staff/:id', function (req, res) {
+    var id = req.params.id;
+    var conditions = ["firstname", "lastname", "wage"];
+    var query = "UPDATE staff ";
+    for (var index in conditions) {
+        if (conditions[index] in req.body) {
+            if (query.indexOf("SET") < 0) {
+                query += "SET ";
+            } else {
+                query += ", ";
+            }
+            query += " " + conditions[index] + " = '" + req.body[conditions[index]] + "' ";
+        }
+
+    }
+    query += " WHERE id = '" + id + "'";
+
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+////////DELETE///////////////
+app.delete('/animals', function (req, res) {
+    var query = "DELETE FROM animals";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete an animal
+app.delete('/animals/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "DELETE FROM animals WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete all cage
+app.delete('/cages', function (req, res) {
+    var query = "DELETE FROM cages";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete a cage
+app.delete('/cages/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "DELETE FROM cages WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete all food
+app.delete('/food', function (req, res) {
+    var query = "DELETE FROM food";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete a food
+app.delete('/food/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "DELETE FROM food WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete all staff
+app.delete('/staff', function (req, res) {
+    var query = "DELETE FROM staff";
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+//Delete a staff
+app.delete('/staff/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "DELETE FROM staff WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify("Success"));
+    });
+});
+
+app.get('/animals/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT * FROM animals WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/cages/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT * FROM cages WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/food/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT * FROM food WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/staff/:id', function (req, res) {
+    var id = req.params.id;
+    var query = "SELECT * FROM staff WHERE id=" + id;
+    db.query(query, function (err, result, fields) {
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+console.log('hello');
+app.listen(3000, function () {
+    db.connect(function (err) {
+        if (err) throw err;
+        console.log('Connection to database successful!');
+    });
+    console.log('Example app listening on port 3000!');
+});
\ No newline at end of file