问连接到c++中的sql？

EN

#include <stdlib.h>
#include <occi.h>
#include <iostream>
using namespace oracle::occi;
using namespace std;



class testOcci
{
  private:

  Environment *env;
  Connection *conn;

  public:

 testOcci (string user, string passwd, string db)
  {
    env = Environment::createEnvironment (Environment::DEFAULT);
    conn = env->createConnection (user, passwd, db);
  }

  /**
   * Destructor for the occi test case.
   */
  ~testOcci ()
  {
    env->terminateConnection (conn);
    Environment::terminateEnvironment (env);
  }  // end of ~testOcci ()

};

int main(void)
{
string user="sbsdb6";
string passwd="sbsdb6";
string db="ABPDV";

testOcci *demo = new testOcci (user, passwd, db);
cout << "Creation Successful" << endl;
delete (demo);
cout << "Deletion Successful" << endl;

return 0;
}