[newbie] Error loading schema

Question

Hi,
I'm just trying to create a .JNLP that should load within Tomcat, and, although still half way through tons of tutorials on the topic, I've noticed that the following file is displaying a 404 error and hope that you can give me more information on this error:
Error is at: http://cid-b712073b3513eb8e.skydrive.live.com/self.aspx/.Public/xsl-error.png
NOTE: I tried to insert a link to this forum using the link option in the toolbar. Although I filled in the URL and the text, the link did not appear in this message as a link.
Edited by: jon80 on May 31, 2009 6:07 AM

Answer 1

I never connected to ms sql environment, so I cannot tell for sure, but will try to describe how it works in Oracle.
In Oracle terminology a database is just a set of files (datafiles, redo logs, control files...). A database may be opened by one or more (->rac) instances (an instance is only some processes... PMON, SMON etc... plus some memory... SGA)
When the database is opened by an instance you can connect and create users, and assign them resources (disk space, via quotas on tablespaces). Users create objects in their space, and these objects constitute the schema.
Object in a schema may be (or not) granted permissions to other schemas (you can select on tables belonging to other schemas)
You do not need to create a new database (in fact XE is limited in this, you can only run one per time), but you can create as many users and schemas you like, providing in this way necessary isolation among applications.
Hope this helps,
Andrea