c# - MSDN Entity Framework Code First Tutorial: SQL Error -

i going through this tutorial on msdn. code in first part of tutorial.

using system; using system.collections.generic; using system.linq; using system.text; using system.threading.tasks; using system.data.entity;  namespace codefirstnewdatabasesample { class program {     static void main(string[] args)     {         using (var db = new bloggingcontext())         {             // create , save new blog              console.write("enter name new blog: ");             var name = console.readline();              var blog = new blog { name = name };             db.blogs.add(blog);             db.savechanges();              // display blogs database              var query = b in db.blogs                         orderby b.name                         select b;              console.writeline("all blogs in database:");             foreach (var item in query)             {                 console.writeline(item.name);             }              console.writeline("press key exit...");             console.readkey();         }     } }  public class blog {     public int blogid { get; set; }     public string name { get; set; }      public virtual list<post> posts { get; set; } }  public class post {     public int postid { get; set; }     public string title { get; set; }     public string content { get; set; }      public int blogid { get; set; }     public virtual blog blog { get; set; } }  public class bloggingcontext : dbcontext {     public dbset<blog> blogs { get; set; }     public dbset<post> posts { get; set; } } } 

compiling this, according tutorial should give me this:

enter name new blog: ado.net blog
blogs in database:
ado.net blog
press key exit...

but instead unhandled sqlexception:
create database permission denied in database 'master'.

is tutorial missing crucial information or there wrong setup?

edit: colleague said missing connectionstrings in app.config.

after adding:

<connectionstrings>     <add name="blogcontext" connectionstring="server=(localdb)\v11.0;integrated security=true;" providername="system.data.sqlclient"/>  </connectionstrings> 

the console application ran, , able see multiple blog entries when running program again. next step in tutorial says connect through server explorer, neither ((localdb)\v11.0) or (.\sqlexpress) appear options.