Можно получить доступ ко внешним источникам данных через
  *ADO: см http://www.delphikingdom.com/mastering/ado.htm
  *Через классы семейства Connection (см. [[AOT | ]] \ System Documentation \ Classes):
    *Connection
    *OCIConnection
    *ODBCConnection
    *UserConnection
    *Statement
----
Connecting to a Database via ODBC 

In AX you can connect to outside databases through AX's built in ODBC,
LoginProperty, Statement, and ResultSet Classes. Through these you can read in data to axapta, or preform update query's like delete's / updates / insert's etc. 
It's really very handy, espcially when connecting AX to already existing databases that AX needs data from, or needs to interact with. 

Below is some example code that will connect to a Database, and loop through a select statements resultset:
<code XPP>
OdbcConnection cn;
Statement s;
ResultSet rs;
LoginProperty lp;
str SQL;

// Field Variables
int Seq;
str Field1;
str Field2;
;

// Create new Login property instance
lp = new LoginProperty();
lp.setDatabase("Test");
lp.setServer("TestDBSrvr");
lp.setUserName("sa");
lp.setPassword("sa_password");

// Create new OdbcConnection instance, and pass it the LoginProperty just created above
cn = new OdbcConnection(lp);

// Create new Statement instance
s = new Statement();

// Set the SQL statement
SQL = "select * from testTable";

// Now fille the ResultSet, and pass it the Select Statement
rs = s.executeQuery(SQL);

while(rs.next())
{
// Fill the field vairables now
Seq = rs.getInt(1);
Field1 = rs.getString(2);
Field2 = rs,getString(3);

// Below here preform some logic on the data, or do some action
...

}
</code>

Получать данные надо в том же порядке, в каком они идут в запросе (см. описание функции [[http://msdn2.microsoft.com/En-US/library/aa177876(SQL.80).aspx]])

В трехзвенной конфигурации не работает функция getDate в [[Класс/ResultSet]]  -- Axapta падает. Единственное пока известное решение -- преобразовывать дату в строку средствами SQL сервера и делать обратное преобразование на стороне Axapta
(см. [[AxForum:8956]])
<code XPP>
TransDate docDate; 
    str               sSQL; 
    boolean     isODBCSQLAccess, isODBCSQLServer; 
    OdbcConnection connection; 
    LoginProperty lp; 
    Statement  statement; 
    ResultSet   resultSet; 
    #odbcConnectionEntries 

    lp = new LoginProperty(); 
    lp.setDSN('DSN'); 
    lp.setUsername('login'); 
    lp.setPassword('password'); 
    connection = new OdbcConnection(lp); 
    statement  = connection.createStatement(); 
    isODBCSQLAccess = (connection = odbcGetInfoStr(#SQL_DBMS_NAME) == 'ACCESS'); 
    isODBCSQLServer  = (connection = odbcGetInfoStr(#SQL_DBMS_NAME) == 'Microsoft SQL Server'); 
    sSQL = 'SELECT *'; 
    if (isODBCSQLServer) 
    { 
        sSQL += ', CONVERT(varchar(50), DOCUMENTDATE, 104) AS DOCDATE'; 
    } 
    if (isODBCAccess) 
    { 
        sSQL += ', DOCUMENTDATE AS DOCDATE'; 
    } 
    resultSet = statement.executeQuery(sSQL); 
    docDate = str2date(resultSet.getString(i), 123);
</code>
----
  *[[http://forum.mazzy.ru/index.php?showtopic=186]]
  *[[http://www.axforum.info/forums/showthread.php?t=10646&highlight=Connection]]
  *[[http://axforum.info/forums/showthread.php?t=2251&highlight=recid]]
  *[[http://dynamics-ax.blogspot.com/2005/11/connecting-to-database-via-odbc.html]]