diff --git a/Dockerfile b/Dockerfile
new file mode 100644
index 00000000..b634020b
--- /dev/null
+++ b/Dockerfile
@@ -0,0 +1,6 @@
+FROM node:lts-alpine
+ COPY index.js /root
+ RUN npm install express
+ RUN npm install mysql
+ EXPOSE 3000
+ CMD node /root/index.js
\ No newline at end of file
diff --git a/answers.md b/answers.md
index b7025b97..d7ca3bb9 100644
--- a/answers.md
+++ b/answers.md
@@ -1,41 +1,54 @@
 # Answers
 
-Lastname:
-Firstname:
+Lastname: Sabry
+Firstname: LALEG
 
 ## 2.2
-command:
+command:docker run app
 
 ## 2.3
-question:
-command:
+question: The port is not opened. We have to open it with EXPOSE 3000
+command : docker run -it -p 3000:3000 app
 
 ## 2.5
-question:
-command:
+question: We have to name the image in order to make it match we match with the
+repository. Moreover, we have to login to docker hub.
+command:docker tag c2d76d932c62 zidv/devops_lab:app
+docker push zidv/devops_lab
 
 ## 2.6
-command:
-
-question:
-command:
+command:docker rmi -f $(docker images -a -q)
+question: We have first deleted every local images we had on the PC. However, 
+since we have pushed our image on our online repository on Docker hub, Docker 
+can build an image from it. 
+command:docker create zidv/devops_lab
 
-command:
+command:docker run --detach zidv/devops_lab
 
 ## 2.7
-question:
-question:
-command:
+question: With the command "sudo docker ps -a", we can get a list of the 
+container with its IDs, names, status, the time since it has been created and 
+the port.
+question: The name of my container is "distracted_jennings".
+command:docker ps -a
 
-command:
+command:docker run --name devops-test --detach zidv/devops-lab:app
 
 ## 2.8
 question:
-output:
+I have executed "docker exec new cat /etc/os-release"
+output:"PRETTY_NAME="Debian GNU/Linux 9 (stretch)"
+NAME="Debian GNU/Linux"
+VERSION_ID="9"
+VERSION="9 (stretch)"
+ID=debian
+HOME_URL="https://www.debian.org/"
+SUPPORT_URL="https://www.debian.org/support"
+BUG_REPORT_URL="https://bugs.debian.org/""
 
 ## 3.1
-command:
+command: docker-compose up
 
 ## 3.4
-command:
-command:
+command:docker-compose up -d
+command:docker-compose logs
\ No newline at end of file
diff --git a/docker-compose.yml b/docker-compose.yml
new file mode 100644
index 00000000..19867e44
--- /dev/null
+++ b/docker-compose.yml
@@ -0,0 +1,12 @@
+version: '3'
+services:
+  my-service:
+    ports:
+      - "3000:3000"
+    environment:
+      - MYSQL_HOST=localhost
+      - MYSQL_USER=root
+      - MYSQL_PASSWORD=
+      - MYSQL_DATABSE=project
+      - MYSQL_PORT=3306
+    image: zidv/devops_lab:app 
\ No newline at end of file
diff --git a/index.js b/index.js
new file mode 100644
index 00000000..36d8c0e4
--- /dev/null
+++ b/index.js
@@ -0,0 +1,972 @@
+const express = require('express');
+const mysql = require('mysql');
+const bodyParser = require('body-parser');
+const app = express();
+
+app.use(bodyParser.urlencoded({extended: true}));
+
+var database = mysql.createConnection({
+    host : process.env.MYSQL_HOST,
+    user : process.env.MYSQL_USER,
+    password : process.env.MYSQL_PASSWORD,
+    database : process.env.MYSQL_DATABASE,
+    port : process.env.MYSQL_PORT
+});
+
+//Use Firewall
+app.use(function(req, res, next){
+    if ("key" in req.query)
+    {
+        var key = req.query["key"];
+        var query = "select apikey from users where apikey = '"+key+"'";
+        database.query(query, function(err, result, fields)
+        {
+        if (err) throw err;
+        if (result.length > 0)
+        {
+            next();
+        }
+        else
+        {
+            res.status(403).send();
+        }
+        });
+    }
+    else
+    {
+        res.status(403).send();
+    }
+});
+
+//Routes Animals
+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+"')";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/animals', function(req, res){
+    var query = "select * from animals";
+    
+    //SELECTION
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date", "id_cage"];
+
+    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]]+"'";
+        }
+    }
+    
+    //SORTING
+    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);
+    }
+    
+    //FILTERS
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+    
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/animals/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "select * from animals where id ="+id;
+    
+    //SELECTION
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date", "id_cage"];
+
+    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]]+"'";
+        }
+    }
+
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.put('/animals/:id', function(req, res) {
+    var query = "update animals";
+    var id = req.params.id;
+    
+    //SELECTION
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date", "id_cage"];
+
+    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;
+    database.query(query, function(err, result, fields){
+        console.log(query);
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/animals', function(req, res){
+    var query = "delete from animals";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/animals/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "delete from animals where id ="+id;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+//Routes Cages
+app.post('/cages', function(req, res){
+    var name = req.body.name;
+    var description = req.body.description;
+    var area = req.body.area;
+    var query = "insert into cages(name, description, area) values('"+name+"', '"+description+"', '"+area+"')";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/cages', function(req, res){
+    var query = "select * from cages";
+    
+    //SELECTION
+    var conditions = ["name", "description", "area"];
+
+    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]]+"'";
+        }
+    }
+    
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.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;
+    
+    //SELECTION
+    var conditions = ["name", "description", "area"];
+
+    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]]+"'";
+        }
+    }
+
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.put('/cages/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "update cages";
+    
+    //SELECTION
+    var conditions = ["name", "description", "area"];
+
+    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;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/cages', function(req, res){
+    var query = "delete from cages";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/cages/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "delete from cages where id ="+id;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+//Routes Food
+app.post('/food', function(req, res){
+    var name = req.body.name;
+    var quantity = req.body.quantity;
+    var id_animal = req.body.id_animal;
+    var query = "insert into food(name, quantity, id_animal) values('"+name+"', '"+quantity+"', '"+id_animal+"')";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/food', function(req, res){
+    var query = "select * from food";
+    
+    //SELECTION
+    var conditions = ["name", "quantity", "id_animal"];
+
+    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]]+"'";
+        }
+    }
+
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.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;
+    
+    //SELECTION
+    var conditions = ["name", "quantity", "id_animal"];
+
+    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]]+"'";
+        }
+    }
+
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.put('/food/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "update food";
+    
+    //SELECTION
+    var conditions = ["name", "quantity", "id_animal"];
+
+    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;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/food', function(req, res){
+    var query = "delete from food";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/food/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "delete from food where id ="+id;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+//Routes Staff
+app.post('/staff', function(req, res){
+    var firstname = req.body.firstname;
+    var lastname = req.body.lastname;
+    var wage = req.body.wage;
+    var query = "insert into staff(firstname, lastname, wage) values('"+firstname+"', '"+lastname+"', '"+wage+"')";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/staff', function(req, res){
+    var query = "select * from staff";
+    
+    //SELECTION
+    var conditions = ["firstname", "lastname", "wage"];
+
+    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]]+"'";
+        }
+    }
+    
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.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;
+    
+    //SELECTION
+    var conditions = ["firstname", "lastname", "wage"];
+
+    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]]+"'";
+        }
+    }
+
+    //SORTING
+    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);
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.put('/staff/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "update staff";
+    
+    //SELECTION
+    var conditions = ["firstname", "lastname", "wage"];
+    
+    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;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/staff', function(req, res){
+    var query = "delete from staff";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.delete('/staff/:id', function(req, res) {
+    var id = req.params.id;
+    var query = "delete from staff where id ="+id;
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+//Routes Relations & Special Queries
+app.get('/animals/:id_animals/cages', function(req, res) {
+    var id_animals = req.params.id_animals;
+    var query = "select cages.* from animals join cages on cages.id = animals.id_cage where animals.id="+id_animals;
+    
+    //SELECTION
+    var conditions = ["name", "description", "area"];
+
+    for(var index in conditions){
+        if(conditions[index] in req.query){
+            if(query.indexOf("where")<0){
+                query += " where";
+            } else {
+                query += " and";
+            }
+
+            query += " cages."+conditions[index]+" = '"+req.query[conditions[index]]+"'";
+        }
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/animals/:id_animals/cages/:id_cages', function(req, res) {
+    var id_animals = req.params.id_animals;
+    var id_cages = req.params.id_cages;
+    var query = "select cages.* from animals join cages on cages.id = animals.id_cage where animals.id= '"+id_animals+"' and cages.id= "+id_cages;
+    
+    //SELECTION
+    var conditions = ["name", "description", "area"];
+
+    for(var index in conditions){
+        if(conditions[index] in req.query){
+            if(query.indexOf("where")<0){
+                query += " where";
+            } else {
+                query += " and";
+            }
+
+            query += " cages."+conditions[index]+" = '"+req.query[conditions[index]]+"'";
+        }
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/cages/:id_cages/animals', function(req, res) {
+    var id_cages = req.params.id_cages;
+    var query = "select animals.* from cages join animals on animals.id_cage=cages.id where cages.id= "+id_cages;
+    
+    //SELECTION
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date", "id_cage"];
+
+    for(var index in conditions){
+        if(conditions[index] in req.query){
+            if(query.indexOf("where")<0){
+                query += " where";
+            } else {
+                query += " and";
+            }
+
+            query += " animals."+conditions[index]+" = '"+req.query[conditions[index]]+"'";
+        }
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/food/:id_food/animals', function(req, res) {
+    var id_food = req.params.id_food;
+    var query = "select animals.* from food join animals on food.id_animal = animals.id where food.id= "+id_food;
+    
+    //SELECTION
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date", "id_cage"];
+
+    for(var index in conditions){
+        if(conditions[index] in req.query){
+            if(query.indexOf("where")<0){
+                query += " where";
+            } else {
+                query += " and";
+            }
+
+            query += " animals."+conditions[index]+" = '"+req.query[conditions[index]]+"'";
+        }
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/food/:id_food/animals/:id_animals', function(req, res) {
+    var id_food = req.params.id_food;
+    var id_animals = req.params.id_animals;
+    var query = "select animals.* from food join animals on food.id_animal = animals.id where food.id= '"+id_food+"' and animals.id= "+id_animals;
+    
+    //SELECTION
+    var conditions = ["name", "breed", "food_per_day", "birthday", "entry_date", "id_cage"];
+
+    for(var index in conditions){
+        if(conditions[index] in req.query){
+            if(query.indexOf("where")<0){
+                query += " where";
+            } else {
+                query += " and";
+            }
+
+            query += " animals."+conditions[index]+" = '"+req.query[conditions[index]]+"'";
+        }
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/animals/:id_animals/food', function(req, res) {
+    var id_animals = req.params.id_animals;
+    var query = "select food.* from animals join food on animals.id = food.id_animal where animals.id= "+id_animals;
+    
+    //SELECTION
+    var conditions = ["name", "quantity", "id_animal"];
+
+    for(var index in conditions){
+        if(conditions[index] in req.query){
+            if(query.indexOf("where")<0){
+                query += " where";
+            } else {
+                query += " and";
+            }
+
+            query += " food."+conditions[index]+" = '"+req.query[conditions[index]]+"'";
+        }
+    }
+
+    //FILTER
+    if("fields" in req.query){
+        query=query.replace("*", req.query["fields"]);
+    }
+
+    //PAGINATION
+    if ("limit" in req.query){
+        query += " LIMIT " + req.query["limit"];
+        if ("offset" in req.query){
+            query += " OFFSET " + req.query["offset"];
+        }
+    }
+
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+app.get('/food-stats', function(req, res) {
+    var id = req.params.id;
+    var query = "select distinct a.id as 'id', COALESCE(floor(dayL.dayLeft), 0) as 'days_left' from animals a natural join (select a1.id, (f.quantity / a1.food_per_day) as dayLeft from animals a1 join food f on a1.id = f.id_animal) as dayL";
+    database.query(query, function(err, result, fields){
+        if (err) throw err;
+        res.send(JSON.stringify(result));
+    });
+});
+
+//Run Application
+app.listen(3000, function(){
+    database.connect(function(err) {
+        if(err) throw err;
+        console.log('Connexion Successful');
+    });
+    console.log('App listening on port 3000');
+})
\ No newline at end of file