Active Server Pages (.asp) and Microsoft Access (.mdb) file.
Just like sending Ajax POST and GET requests to php and an sql database except the database (.mdb) is stored right in the application files. Then you just add the .asp coding to access the database and run queries like so:
<%
Set POwnn = Server.CreateObject("ADODB.Connection")
Set OSP = Server.CreateObject("ADODB.Recordset")
ConnectionString = "PROVIDER=MICROSOFT.JET.OLEDB.4.0;DATA SOURCE=" & Server.MapPath("db\database.mdb")
POwnn.Open ConnectionString
sql = "SELECT * FROM users"
OSP.Open sql, POwnn, 3, 3%>
<%=OSP("username")%>
<%
OSP.Close
POwnn.Close
%>