diff --git a/doc/SQL_tables_scheme.png b/doc/SQL_tables_scheme.png
new file mode 100644
index 0000000..4f48a7c
Binary files /dev/null and b/doc/SQL_tables_scheme.png differ
diff --git a/src/SQLmanager.cpp b/src/SQLmanager.cpp
index f61d1dc..3661818 100644
--- a/src/SQLmanager.cpp
+++ b/src/SQLmanager.cpp
@@ -9,24 +9,55 @@
 #include <vector>
 #include <list>
 #include <sqlite3.h>
+#include <sstream>
 #include "Service.h"
 #include "SQLmanager.h"
 
 using namespace std;
 
+//private methods
+int callback(void * data, int argc, char **argv, char **azColName) {
+    int userID = stoi(argv[0]);  
+    string serviceName = argv[1];
+    string serveur=argv[2]; 
+    string ip=argv[3];
+    //extract the IPs as integers
+    stringstream ss(ip);
+    string nb;
+    while (getline(ss,nb,',')){
+      stoi(nb);
+    }
+
+     
+    cout << userID << serviceName << serveur << ip << endl;
+    //create a data structure to store servers
+    return 0;
+}
+
 //constructor
 SQLmanager::SQLmanager()
 {
-    sqlite3 *db;
-   char *zErrMsg = 0;
+   sqlite3 *db;
    int rc;
-
-   rc = sqlite3_open("test.db", &db);
-
+   int res;
+   char* errMess=0;
+   const char * data="Callback function called";
+   rc=sqlite3_open("general.db", &db);
+   //CAREFUL: enable FK constraints? or not cause just reading?
    if(rc) {
       cerr << "Error. Database cannot be opened." << endl << sqlite3_errmsg(db) << endl;
    } else {
       cout << "Database opened" << endl;
+      //change this to get the info to create both the service and the server
+      string query="SELECT services.id,services.name,servers.name,GROUP_CONCAT(CASE WHEN IPs.value IS NOT NULL THEN IPs.value END) FROM services JOIN servers_services ON services.name = servers_services.name_service JOIN servers ON servers.name = servers_services.name_server CROSS JOIN json_each(servers.IPs) AS IPs GROUP BY services.id, services.name, servers.name;";
+      res = sqlite3_exec(db, query.c_str(), callback, (void*)data, &errMess); 
+      if( res != SQLITE_OK ) {
+         cout << errMess << endl;
+         sqlite3_free(errMess);
+      } else {
+         cout << "Data extracted from database." << endl;
+      }
+      
    }
    sqlite3_close(db);
 }
@@ -55,6 +86,7 @@ int SQLmanager::isServiceOnServer(string serviceUsername)
 
 
 
+
 //int isServiceOnServer(string serviceUsername)
 //this method tests if a certain service is on the current server
 //it looks into the /etc/hosts file thanks to a pipe to a separate bash process
diff --git a/src/SQLmanager.h b/src/SQLmanager.h
index 10602ff..5b9faf7 100644
--- a/src/SQLmanager.h
+++ b/src/SQLmanager.h
@@ -10,6 +10,7 @@
 #include <vector>
 #include <list>
 #include "Service.h"
+#include "Server.h"
 
 using namespace std;
 
@@ -26,5 +27,6 @@ class SQLmanager {
 
     private:
     vector <Service> services;
+    vector <Server> servers;
 };
 #endif 
\ No newline at end of file
diff --git a/src/Server.cpp b/src/Server.cpp
new file mode 100644
index 0000000..1d0203d
--- /dev/null
+++ b/src/Server.cpp
@@ -0,0 +1,5 @@
+//deployer Server implementation
+// Copyright (C) 2024 Jean-Cloud
+// GNU General Public License v3
+
+#include "Server.h"
diff --git a/src/Server.h b/src/Server.h
new file mode 100644
index 0000000..d33145a
--- /dev/null
+++ b/src/Server.h
@@ -0,0 +1,26 @@
+//deployer Server header
+// Copyright (C) 2024 Jean-Cloud
+// GNU General Public License v3
+
+#if !defined(SERVER_H)
+#define SERVER_H
+
+#include <string>
+#include <list>
+using namespace std;
+
+class Server{
+    public:
+    Server(int anID,string aName,string aLocation,string anISP,string aNotes,string aWg_pubkey,list<int> anIPs):ID(anID),name(aName),location(aLocation),ISP(anISP),notes(aNotes),wg_pubkey(aWg_pubkey),IPs(anIPs){};
+    ~Server(){}
+
+    private:
+    int ID;
+    string name;
+    string location;
+    string ISP;
+    string notes;
+    string wg_pubkey;
+    list <int> IPs;
+};
+#endif 
\ No newline at end of file
diff --git a/src/general.db b/src/general.db
index 115aba5..60bf608 100644
Binary files a/src/general.db and b/src/general.db differ
diff --git a/src/testSQL.cpp b/src/testSQL.cpp
new file mode 100644
index 0000000..3f93488
--- /dev/null
+++ b/src/testSQL.cpp
@@ -0,0 +1,8 @@
+
+#include "SQLmanager.h"
+#include "Service.h"
+
+int main(){
+    SQLmanager manager = SQLmanager();
+    
+}
\ No newline at end of file
diff --git a/testenv/services/test.sh8s.sh/.env b/testenv/services/test.sh8s.sh/.env
index 356f9a9..8b597ac 100644
--- a/testenv/services/test.sh8s.sh/.env
+++ b/testenv/services/test.sh8s.sh/.env
@@ -1 +1,9 @@
-GIT_SOURCE_REPO=https://git.jean-cloud.net/adrian/velov
+http_dir=/srv/http/test.sh8s.sh
+data_dir=/data/test.sh8s.sh
+secret_dir=/data/secrets/test.sh8s.sh
+docker_dir=/services/test.sh8s.sh
+jc_service=test.sh8s.sh
+home=/data/test.sh8s.sh
+jc_id=2001
+net=172.29.2001
+jc_cert=/etc/letsencrypt/live/dummy
diff --git a/testenv/services/test.sh8s.sh/nginx_server2.conf b/testenv/services/test.sh8s.sh/nginx_server2.conf
new file mode 100644
index 0000000..34303bb
--- /dev/null
+++ b/testenv/services/test.sh8s.sh/nginx_server2.conf
@@ -0,0 +1,25 @@
+server {
+  listen 443 ssl http2;
+  listen [::]:443 ssl http2;
+  ssl_certificate /fullchain.pem;
+  ssl_certificate_key /privkey.pem;
+  server_name velov.jean-cloud.net www.velov.jean-cloud.net;
+  root ;
+
+  index index.php;
+
+  location / {
+          try_files  / =404;
+  }
+
+  location ~ \.php$ {
+    fastcgi_split_path_info ^(.+\.php)(/.+)$;
+    fastcgi_pass .100:9000;
+    fastcgi_index index.php;
+    include fastcgi_params;
+    fastcgi_param SCRIPT_FILENAME /usr/src/app/;
+    #fastcgi_param SCRIPT_FILENAME /usr/src/app/index.php;
+    fastcgi_param PATH_INFO ;
+  }
+}
+