Communicating to Database Oracle /Sybase in Linux Server thr

I am planning at a setup where in i have different Qnx 4.25 Clients & a
database server.The Database server is Oracle or Sybase Which is on Linux.or

How can i communicate /Query datas from Qnx Clients to Server.
Do i require any ODBC component in my Clients side.
( I am sorry i am new to Databases ,the question may be simple)
If so, Does QNX4 have one ?