IBM Informix .NET Provider

Standard

Database=myDataBase;Host=192.168.10.10;Server=db_engine_tcp;Service=1492;
Protocol=onsoctcp;UID=myUsername;Password=myPassword;

IBM Informix OLE DB Provider

Standard

Provider=Ifxoledbc;Data [email protected];User ID=myUsername;
Password=myPassword;

Persisting security info in the connection string

Provider=Ifxoledbc;Data [email protected];User ID=myUsername;
Password=myPassword;Persist Security Info=true;

.NET Framework Data Provider for OLE DB

Use an OLE DB provider from .NET

Provider=any oledb provider’s name;OledbKey1=someValue;OledbKey2=someValue;

See the respective OLEDB provider’s connection strings options. The .net OleDbConnection will just pass on the connection string to the specified OLEDB provider. Read more here.

IBM Informix ODBC Driver

Informix 3.30

Dsn=”;Driver={INFORMIX 3.30 32 BIT};Host=hostname;Server=myServerAddress;
Service=service-name;Protocol=olsoctcp;Database=myDataBase;Uid=myUsername;
Pwd=myPassword;

Informix-CLI 2.5

Informix-CLI 2.5:

Driver={Informix-CLI 2.5 (32 Bit)};Server=myServerAddress;Database=myDataBase;
Uid=myUsername;Pwd=myPassword;

.NET Framework Data Provider for ODBC

Use an ODBC driver from .NET

Driver={any odbc driver’s name};OdbcKey1=someValue;OdbcKey2=someValue;

See the respective ODBC driver’s connection strings options. The .net OdbcConnection will just pass on the connection string to the specified ODBC driver. Read more here.

Luxena dbExpress driver for Informix Pro

Standard

The connection string is provided through the “HostName” parameter that exists in TSQLConnection.Params collection.

InformixServer=myServerAddress;Client_Locale=en_us.8859-1;Fet_Buf_Size=32767;
OptOFC=1;AutoCommit=True;BlobSize=-1;WaitOnLocks=False;CommitRetain=False;
IsolationLevel=ReadCommitted;Trim Char=False;money=currency;decimal=bcd;
int8=fmtbcd;lvarchar=string;

Standard dbExpress configuration parameters have higher priority against connection string parameters.