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How dose jConnect support type 3 jdbc?

4 posts in ,  General Discussion JConnect version 3.0 Last posting was on 1999-07-02 12:19:17.0Z
Jim Posted on 1999-06-30 13:37:14.0Z
From: "Jim" <cyang@writeme.com>
Subject: How dose jConnect support type 3 jdbc?
Date: Wed, 30 Jun 1999 09:37:14 -0400
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Hi there,
How dose jConnect support type 3 jdbc, Net-protocol/all-Java ? Is the
Cascade HTTP gateway the one support type 3 jdbc?
According to jConnect 3.0 document, The Sybase jConnect driver could be
Net-protocol/all-Java or Native-protocol/all-Java.

There are four types of JDBC drivers:
? JDBC-ODBC bridge - Translates JDBC calls into ODBC calls and passes them
to an ODBC driver. Some ODBC software must be resident on the client
machine. Some client database code may also reside on the client machine.
? Native-API/partly-Java - Converts JDBC calls into database-specific calls.
This driver, which communicates directly with the database server, also
requires some binary code on the client machine.
? Net-protocol/all-Java - Communicates to a middle-tier server using a
DBMS-independent net protocol. A middle-tier gateway then converts the
request to a vendor-specific protocol.
? Native-protocol/all-Java - Converts JDBC calls to the vendor-specific DBMS
protocol, allowing client applications direct communication with the
database server.


Thanks


Lance Andersen Posted on 1999-07-01 12:31:10.0Z
Message-ID: <377B5F8E.644769BE@sybase.com>
Date: Thu, 01 Jul 1999 08:31:10 -0400
From: Lance Andersen <lancea@sybase.com>
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Subject: Re: How dose jConnect support type 3 jdbc?
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Jim wrote:
>
> Hi there,
> How dose jConnect support type 3 jdbc, Net-protocol/all-Java ? Is the
> Cascade HTTP gateway the one support type 3 jdbc?
> According to jConnect 3.0 document, The Sybase jConnect driver could be
> Net-protocol/all-Java or Native-protocol/all-Java.
>
> There are four types of JDBC drivers:
> ? JDBC-ODBC bridge - Translates JDBC calls into ODBC calls and passes them
> to an ODBC driver. Some ODBC software must be resident on the client
> machine. Some client database code may also reside on the client machine.
> ? Native-API/partly-Java - Converts JDBC calls into database-specific calls.
> This driver, which communicates directly with the database server, also
> requires some binary code on the client machine.
> ? Net-protocol/all-Java - Communicates to a middle-tier server using a
> DBMS-independent net protocol. A middle-tier gateway then converts the
> request to a vendor-specific protocol.
> ? Native-protocol/all-Java - Converts JDBC calls to the vendor-specific DBMS
> protocol, allowing client applications direct communication with the
> database server.
>
> Thanks

jConnect is a type 4 driver.

It can be used as a type 3 driver when used with Jaguar, OpenServer, ASE
using DirectConnect

The Cascade server and the prefered TDSTunnelServlet are provide as a
means to allow for the use of an applet to access an RDBMS on a
different server than the webserver which hosts the applet.

Lance
team sybase
--
===============================================================================
Lance J. Andersen Email: lancea@sybase.com
Sybase Product Support Engineering Phone:(781) 564-6336
77 South Bedford Street Fax: (781) 564-6148
Burlington, MA 01803

The Dark Knight Returns!!! Let's Go Penguins!!!
===============================================================================


Jim Posted on 1999-07-01 15:25:40.0Z
From: "Jim" <cyang@writeme.com>
References: <4bS#00vw#GA.75@forums.sybase.com> <377B5F8E.644769BE@sybase.com>
Subject: Re: How dose jConnect support type 3 jdbc?
Date: Thu, 1 Jul 1999 11:25:40 -0400
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Lance Andersen wrote in message <377B5F8E.644769BE@sybase.com>...
>Jim wrote:
>>
>> Hi there,
>> How dose jConnect support type 3 jdbc, Net-protocol/all-Java ? Is
the
>> Cascade HTTP gateway the one support type 3 jdbc?
>> According to jConnect 3.0 document, The Sybase jConnect driver could
be
>> Net-protocol/all-Java or Native-protocol/all-Java.
>>
>> There are four types of JDBC drivers:
>> ? JDBC-ODBC bridge - Translates JDBC calls into ODBC calls and passes
them
>> to an ODBC driver. Some ODBC software must be resident on the client
>> machine. Some client database code may also reside on the client machine.
>> ? Native-API/partly-Java - Converts JDBC calls into database-specific
calls.
>> This driver, which communicates directly with the database server, also
>> requires some binary code on the client machine.
>> ? Net-protocol/all-Java - Communicates to a middle-tier server using a
>> DBMS-independent net protocol. A middle-tier gateway then converts the
>> request to a vendor-specific protocol.
>> ? Native-protocol/all-Java - Converts JDBC calls to the vendor-specific
DBMS
>> protocol, allowing client applications direct communication with the
>> database server.
>>
>> Thanks
>
>jConnect is a type 4 driver.
>
>It can be used as a type 3 driver when used with Jaguar, OpenServer, ASE
>using DirectConnect

I think jConnect is behind Jaguar. It is type 4. I am not clear about the
type 3 definition. Middle-tier like Jaguar is not a part of jConnect.

>The Cascade server and the prefered TDSTunnelServlet are provide as a
>means to allow for the use of an applet to access an RDBMS on a
>different server than the webserver which hosts the applet.


Isn't the Cascade server a mid-tier? I mean a simple mid-tier.

>Lance
>team sybase
>--


Lance Andersen Posted on 1999-07-02 12:19:17.0Z
Message-ID: <377CAE45.57994EB4@sybase.com>
Date: Fri, 02 Jul 1999 08:19:17 -0400
From: Lance Andersen <lancea@sybase.com>
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Jim wrote:
>
>
> I think jConnect is behind Jaguar. It is type 4. I am not clear about the
> type 3 definition. Middle-tier like Jaguar is not a part of jConnect.
>

the middle-tier is used to provide communications to the backend
server. This is separate from the driver. Vendors that provide type 3
drivers provide the client driver and then the middle tier which
communicates with the driver and then does a re-direct to the backend.

Regards,
Lance

--
===============================================================================
Lance J. Andersen Email: lancea@sybase.com
Sybase Product Support Engineering Phone:(781) 564-6336
77 South Bedford Street Fax: (781) 564-6148
Burlington, MA 01803

The Dark Knight Returns!!! Let's Go Penguins!!!
===============================================================================