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Learning what CLASSPATH is about
Message
From
28/11/2003 21:50:26
 
General information
Forum:
Java
Category:
Databases
Miscellaneous
Thread ID:
00853953
Message ID:
00854365
Views:
29
You know I can't figure out if I like or dislike the buttons at the bottom of the first screen. At first I thought they were terrible because they are not spaced and not the same size. Then I realized that's what set them part from each other. My eye focus on the buttons immediately. Funny - tell me your thoughts!

I'm still learning about the way data is gathered and used in a Java database app. I just found out that the type (as in 1,2,3,4) of JDBC driver can determine the way data is accessed. It seems that in a two tier setup (client/server) a type 4 is normally used (I'm not sure what type the "postgresql.jar" is) this is because the type 4 talks directly to the database in the native language of the database and require no other support libs. But this is good and bad. It's good because of the direct access. It's bad because of the direct access required. You see one should not allow direct access to the database from the internet (password protected or not). Of course I just read that statement. The other types (I don't know much about them) can use a server to access the data. For me this sort of sounds like a COM server running on a server that you can have access to from the internet. This also sounds a little like 3 tiers. But the types of JDBC are different. One type requires a translator built into the database engine (I believe the Postgres data engine has this type and type 4) other require some sort of other server. Anyway, I'm thinking that JBoss can act as the server access module if I decide to go that way.

For now I'm using the Postgresql.jar. I'm still confused about the datamodule that Borland uses. Although, I discovered that I can drop data access classes on jfames. But still haven't figured out a way to run a simple java program using the IDE.

Like you I have to make money - so I've been programing in VFP for the last day.

John
John Fabiani
Woodland, CA
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