330 Java Tips.pdf - FTP Server

Databases & beans
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Databases & beans
Q: Anybody does know a freeware JDBC driver for a dsn-less connection to MS
SQL-Server? Would even consider a "cheapware" version.
Answer: Go to http://industry.java.sun.com/products/jdbc/drivers and search for
Microsoft SQL Server. Any Type4 (i.e. pure Java) driver should work without a DSN.
The only free one I'm aware of is at http://www.freetds.org - but it is rather limited in
what it can do. You'd need to try it out to see whether it fits your requirements.
--
Stefan
P.S. DSN - Data Source Name
Q: I just want to know which programs and virtual machines you have to have to
make and run enterprise java beans...
Answer: To compile and run Enterprise JavaBeans, you need a couple of things.
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First, you need the J2EE SDK. This kit includes APIs full of packages which are
considered extensions to the standard Java language APIs, as well as other tools,
which come with the J2SE SDK, which you should already have. Install the SDK and
make sure its jar file is in your development environment's classpath.
Second, you need a container, which in this case you can also refer to as an
application server, though technically a container is just one part of the server. The
container acts as a liaison between the client object and the Enterprise JavaBean.
When you talk to an Enterprise JavaBean, you actually talk to a proxy (a substitute),
and the proxy, which knows how to do networking stuff, talks to the container, which
in turn talks to the actual implementation object which is what you think of when you
think of an Enterprise JavaBean.
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