good correction

package.json

@@ -8,6 +8,8 @@
     "start": "node server.js"
   },
   "dependencies": {
-    "express": "^4.13.3"
+    "express": "^4.13.3",
+    "mssql": "^3.3.0",
+    "tedious": "^9.2.1"
   }
 }

server.js

@@ -1,49 +1,74 @@
-var express = require("express");
+var express = require('express'); // Web Framework
 var app = express();
-var connection = require('tedious').Connection;
-var request = require('tedious').Request;
+var sql = require('mssql'); // MS Sql Server client
 
-app.get('/', function (req, res) {
-    //set up the connection information
-    var config = {
-        server: 'localhost',
-        authentication: {
-            type: 'default',
-            options: {
-                userName: 'sa',
-                password: 'Yukon900', // update me
-                database: 'DemoData' // doesn't seem to work?
-	    },
-        }
-    };
+// Connection string parameters.
+var sqlConfig = {
+    user: 'sa',
+    password: 'Yukon900',
+    server: 'localhost',
+    port:'1433',
+    database: 'DemoData'
+}
 
-    var conn = new connection(config);
+function getData(res){
+  var conn = new sql.Connection(sqlConfig);
+  var req = new sql.Request(conn);
+  conn.connect(function(err) {
+    if (err) {
+      console.log(err);
+      return;
+  }
+  req.query("SELECT * FROM DemoData.dbo.Products", function (err, recordset) {
+      if (err) {
+          console.log(err);
+          return;
+      }
+      else {
+          console.log(recordset);
+          res.end(JSON.stringify(recordset)); 
+      }
+      conn.close();
+  });
+  });
+}
+function getdatabyname(req,res){
+
+  var conn = new sql.Connection(sqlConfig);
+  var reques = new sql.Request(conn);
+  conn.connect(function(err) {
+    if (err) {
+      console.log(err);
+      return;
+  }
+  console.log(req.params)
+  var stringRequest = "SELECT * FROM DemoData.dbo.Products Where ProductName = '" + req.params.ProductName + "'"; 
+  reques.query(stringRequest, function (err, recordset) {
+      if (err) {
+          console.log(err);
+          return;
+      }
+      else {
+          console.log(recordset);
+          res.end(JSON.stringify(recordset)); 
+      }
+      conn.close();
+  });
+})
+}
 
-    conn.on('connect', function(err) {
-        if (err) {
-            console.log(err);
-        } else {
-            sqlreq = new request("SELECT * FROM DemoData.dbo.Products FOR JSON AUTO", function(err, rowCount) {
-                if (err) {
-                    console.log(err);
-                }
-            });
+app.get('/customers', function (req, res) {
+  getData(res);
+})
+app.get('/customers/:ProductName/', function (req, res) {
 
-            sqlreq.on('row', function(columns) { 
-                columns.forEach(function(column) {  
-                    if (column.value === null) {  
-                        console.log('NULL');
-                    } else {  
-                        res.send(column.value);
-                    }  
-                });
-            });
-
-            conn.execSql(sqlreq); 
-        }
-    });
-})  
+getdatabyname(req,res);
+})
 
+// Start server and listen on http://localhost:8081/
 var server = app.listen(8080, function () {
-    console.log("Listening on port %s...", server.address().port);
-});
+    var host = server.address().address
+    var port = server.address().port
+
+    console.log("app listening at http://%s:%s", host, port)
+});