diff --git a/Web_API.js b/Web_API.js
new file mode 100755
index 00000000..c2358289
--- /dev/null
+++ b/Web_API.js
@@ -0,0 +1,952 @@
+const express = require('express');
+const mysql = require('mysql');
+const app = express();
+const bodyParser = require('body-parser');
+
+var db = mysql.createConnection({
+host: "localhost",
+user: "root",
+password: "",
+database: "project",
+port: "3306"
+});
+
+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.send("Error", 403);
+}
+});
+} else {
+res.send("Error", 403);
+}
+});
+
+app.use(bodyParser.urlencoded({ extended: true }));
+
+app.get('/animals', function(req, res) {
+var query = "SELECT * FROM animals";
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+        
+    if ("limit" in req.query) {
+query += " LIMIT " + req.query["limit"];
+if ("offset" in req.query) {
+query += " OFFSET " + req.query["offset"];
+}
+}
+    
+    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 ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+
+    
+db.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;
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+        
+    if ("limit" in req.query) {
+query += " LIMIT " + req.query["limit"];
+if ("offset" in req.query) {
+query += " OFFSET " + req.query["offset"];
+}
+}
+    
+    if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+
+    
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+    
+});
+
+app.post('/animals', function(req, res) {
+    
+    var nom = req.body.name;
+    var race = req.body.breed;
+    var aliment = req.body.food_per_day;
+    var anniversaire = req.body.birthday;
+    var dateEntree = req.body.entry_date;
+    var cageId = req.body.id_cage;
+    var query = "INSERT INTO animals(name, breed, food_per_day, birthday, entry_date, id_cage) VALUES ( '" + nom + "', '" + race + "', '" + aliment + "', '" + anniversaire + "', '" + dateEntree + "', '" + cageId + "')";
+    
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+
+app.put('/animals/:id', function(req,res) {
+    var nom = req.body.name;
+    var race = req.body.breed;
+    var aliment = req.body.food_per_day;
+    var anniversaire = req.body.birthday;
+    var dateEntree = req.body.entry_date;
+    var cageId = req.body.id_cage;
+    var id = req.params.id;
+
+    
+    var query = "UPDATE animals SET ";
+    
+    if(nom!== undefined) query+=" name='"+nom+"',";
+    if(race!== undefined) query+=" breed='"+race+"',";
+    if(aliment!== undefined) query+=" food_per_day='"+aliment+"',";
+    if(anniversaire!== undefined) query+=" birthday='"+anniversaire+"',";
+    if(dateEntree!== undefined) query+=" entry_date='"+dateEntree+"',";
+    if(cageId!== undefined) query+=" id_cage='"+cageId+"',";
+    
+    query=query.slice(0,-1);
+    
+    query+= " WHERE id=" + id;
+
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+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"));
+});
+});
+
+
+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"));
+});
+});
+
+
+
+app.get('/cages/:id_cage/animals/:id_animal', function(req, res) {
+var animalId = req.params.id_animal;
+var cageId = req.params.id_cage;
+    
+var query = "SELECT animals.id,animals.name,animals.breed,animals.food_per_day,animals.birthday,animals.entry_date,animals.id_cage FROM animals FROM animals INNER JOIN cages ON animals.id_cage = cages.id WHERE animals.id=" + animalId + " AND cages.id=" + cageId;
+    
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+    
+    if ("fields" in req.query) {
+query = query.replace("animals.id,animals.name,animals.breed,animals.food_per_day,animals.birthday,animals.entry_date,animals.id_cage", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+
+
+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;
+
+var conditions = ["id", "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]] + "'";
+}
+}    
+
+    
+    if ("limit" in req.query) {
+query += " LIMIT " + req.query["limit"];
+if ("offset" in req.query) {
+query += " OFFSET " + req.query["offset"];
+}
+}
+    
+        if ("fields" in req.query) {
+query = query.replace("animals.id,animals.name,animals.breed,animals.food_per_day,animals.birthday,animals.entry_date,animals.id_cage", req.query["fields"]);
+}
+    
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+
+
+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;
+
+var conditions = ["id", "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]] + "'";
+}
+}    
+
+    
+    if ("limit" in req.query) {
+query += " LIMIT " + req.query["limit"];
+if ("offset" in req.query) {
+query += " OFFSET " + req.query["offset"];
+}
+}
+    
+        if ("fields" in req.query) {
+query = query.replace("cages.id,cages.name,cages.description,cages.area", req.query["fields"]);
+}
+    
+db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+app.get('/animals/:id_animal/cages/:id_cage', function(req, res) {
+var animalId = req.params.id_animal;
+var cageId = req.params.id_cage;
+    
+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=" + animalId + " AND cages.id=" + cageId;
+    
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+    if ("fields" in req.query) {
+query = query.replace("cages.id,cages.name,cages.description,cages.area", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+
+
+
+app.get('/cages/:id', function(req, res) {
+    var id = req.params.id;
+var query = "SELECT * FROM cages WHERE id="+id;
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+    
+    if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+app.get('/cages', function(req, res) {
+var query = "SELECT * FROM cages";
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+        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 ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+
+app.post('/cages', function(req, res) {
+    
+    var nom = req.body.name;
+    var description = req.body.description;
+    var area = req.body.area;
+    var query = "INSERT INTO cages(name, description, area) VALUES ('" + nom + "', '" + description + "', '" + area + "')";
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+
+app.put('/cages/:id', function(req,res) {
+    
+    var id = req.params.id;
+    var nom = req.body.name;
+    var description = req.body.description;
+    var area = req.body.area;
+    
+    var query = "UPDATE cages SET ";
+    
+    if(nom!== undefined) query+=" name='"+nom+"',";
+    if(description!== undefined) query+=" description='"+description+"',";
+    if(area!== undefined) query+=" area='"+area+"',";
+    
+    query=query.slice(0,-1);
+    
+    query+= " WHERE id=" + id;
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+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"));
+});
+});
+
+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"));
+});
+});
+
+app.get('/food/:id', function(req, res) {
+    var id = req.params.id;
+var query = "SELECT * FROM food WHERE id="+id;
+var conditions = ["id", "name","id_animal", "quantity"];
+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 ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+app.get('/food', function(req, res) {
+var query = "SELECT * FROM food";
+var conditions = ["id", "name","id_animal", "quantity"];
+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 ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+app.post('/food', function(req, res) {
+    
+    var nom = req.body.name;
+    var animalId = req.body.id_animal;
+    var quantite = req.body.quantity;
+    var query = "INSERT INTO food(name, quantity, id_animal) VALUES ('" + nom + "', '" + quantite + "', '" + animalId + "')";
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+
+app.put('/food/:id', function(req,res) {
+    
+    var id = req.params.id;
+    var nom = req.body.name;
+    var animalId = req.body.id_animal;
+    var quantite = req.body.quantity;
+    
+    var query = "UPDATE food SET ";
+    
+    if(nom!== undefined) query+=" name='"+nom+"',";
+    if(animalId!== undefined) query+=" id_animal='"+animalId+"',";
+    if(quantite!== undefined) query+=" quantity='"+quantite+"',";
+    
+    query=query.slice(0,-1);
+    
+    query+= " WHERE id=" + id;
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+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"));
+});
+});
+
+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"));
+});
+});
+
+
+
+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 food.id_animal = animals.id WHERE food.id=" + id;
+    
+var conditions = ["id", "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]] + "'";
+}
+}
+
+    
+    if ("fields" in req.query) {
+query = query.replace("animals.id, animals.name, animals.breed, animals.food_per_day, animals.birthday, animals.entry_date, animals.id_cage", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+app.get('/food/:id_food/animals/:id_animal', function(req, res) {
+var foodId = req.params.id_food;
+var animalId = req.params.id_animal;
+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 food.id_animal = animals.id WHERE food.id=" + foodId + " AND  animals.id=" +animalId;
+    
+    
+    var conditions = ["id", "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]] + "'";
+}
+}
+
+    
+    if ("fields" in req.query) {
+query = query.replace("animals.id, animals.name, animals.breed, animals.food_per_day, animals.birthday, animals.entry_date, animals.id_cage", req.query["fields"]);
+}
+
+    
+    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));
+});
+}); 
+
+
+
+
+
+app.get('/animals/:id/food', function(req, res) {
+var id = req.params.id;
+var query = "SELECT food.id,food.name,food.quantity,food.id_animal FROM animals INNER JOIN food ON food.id_animal = animals.id WHERE animals.id=" + id;
+    
+var conditions = ["id", "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]] + "'";
+}
+}
+
+    
+    if ("fields" in req.query) {
+query = query.replace("food.id,food.name,food.quantity,food.id_animal", req.query["fields"]);
+}
+
+    
+    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));
+});
+});
+
+app.get('/food/:id_food/animals/:id_animal', function(req, res) {
+var foodId = req.params.id_food;
+var animalId = req.params.id_animal;
+var query = "SELECT food.id,food.name,food.quantity,food.id_animal FROM animals INNER JOIN food ON food.id_animal = animals.id WHERE food.id=" + foodId + " AND  animals.id=" +animalId;
+    
+    
+var conditions = ["id", "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]] + "'";
+}
+}
+
+    
+    if ("fields" in req.query) {
+query = query.replace("food.id,food.name,food.quantity,food.id_animal", req.query["fields"]);
+}
+
+    
+    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));
+});
+}); 
+
+
+app.get('/staff/:id', function(req, res) {
+    var id = req.params.id;
+var query = "SELECT * FROM staff WHERE id="+id;
+var conditions = ["id", "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]] + "'";
+}
+}
+
+    
+    if ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+    
+    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));
+});
+});
+
+
+app.post('/staff', function(req, res) {
+    
+    var prenom = req.body.firstname;
+    var nom = req.body.lastname;
+    var salaire = req.body.wage;
+    var query = "INSERT INTO staff(firstname, lastname, wage) VALUES ('" + prenom + "', '" + nom + "', '" + salaire + "')";
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+app.get('/staff', function(req, res) {
+var query = "SELECT * FROM staff";
+var conditions = ["id", "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]] + "'";
+}
+}
+    
+        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 ("fields" in req.query) {
+query = query.replace("*", req.query["fields"]);
+}
+    
+    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));
+});
+});
+
+
+
+
+app.put('/staff/:id', function(req,res) {
+    
+    var id = req.params.id;
+    var prenom = req.body.firstname;
+    var nom = req.body.lastname;
+    var salaire = req.body.wage;
+    
+    var query = "UPDATE staff SET ";
+    
+    if(prenom!== undefined) query+=" firstname='"+prenom+"',";
+    if(nom!== undefined) query+=" lastname='"+nom+"',";
+    if(salaire!== undefined) query+=" wage='"+salaire+"',";
+    
+    query=query.slice(0,-1);
+    
+    query+= " WHERE id=" + id;
+    
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify("Success"));
+});
+});
+
+
+
+
+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"));
+});
+});
+
+
+
+
+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('/food-stats', function(req,res) {
+    var query ="SELECT animals.id,CASE WHEN animals.food_per_day =0 THEN 0 ELSE food.quantity/animals.food_per_day END as days_left FROM food INNER JOIN animals ON food.id_animal=animals.id";
+    db.query(query, function(err, result, fields) {
+if (err) throw err;
+res.send(JSON.stringify(result));
+});
+});
+
+
+
+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
diff --git a/answers.md b/answers.md
index b7025b97..665e3bbe 100644
--- a/answers.md
+++ b/answers.md
@@ -1,40 +1,53 @@
 # Answers
 
-Lastname:
-Firstname:
+Lastname: RESPLANDY	
+Firstname: Numa 
 
 ## 2.2
-command:
+command: docker run app . 
 
 ## 2.3
-question:
-command:
+question:because 
+command: docker run -p 8080:8080 
+
+## 2.4
+question: connection values to database, we specify the of the port, db,login,password,host for the connection to the database.
+command:docker run -e MYSQL_HOST='localhost' -e MYSQL_PORT='8080' -e MYSQL_DATABASE='project' -e MYSQL_LOGIN='root' -e MYSQL_PASSWORD='root' app 
 
 ## 2.5
-question:
-command:
+question: we push the image and we create a docker repository
+command:docker push numareplandy/devops-lab:tag1
 
 ## 2.6
-command:
+command:docker system prune -a
 
 question:
-command:
+command:docker pull numareplandy/devops-lab:app
 
-command:
+command:docker create numareplandy/devops-lab docker run --detach godlikedocker/devops-lab
 
 ## 2.7
-question:
-question:
-command:
-
-command:
+question: we use  to show the container
+question:the name : pedantic_dijkstra
+command:docker ps -a
+command:docker rename pedantic_dijkstra wep_api
 
 ## 2.8
 question:
 output:
+Air-de-Numa:devops-lab numa$ docker run -it c75ab6b5c258  bash
+root@f48986ac1c15:/# cat /etc/*release
+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 start
 
 ## 3.4
 command: