I'm migrating an Access '97 DB (tables only) to Oracle 7.3 on a VMS
platform using SQLPlus. I have little experience in either and few
resources available at this time. Basically, I've got a telnet session
to SQL Plus and SQL Loader. Can you help me with the following please?
- How do I identify field constraints such as primary and foreign keys
in a CREATE statement (I have examples of how to do it through ALTER but
why do all of that schlock twice?) What's the syntax?
- Data Type conversions, please confirm or correct the following:
Access Oracle
Yes/No = Raw(1)
Long Int= Number(7,0), Raw(16)?
Single = Number(?,?)
Text(X) = VarChar2(X), X = some number of chars
- Access Autonumber: In order to replicate the Access Autonumber
"variable" type, it looks like I need to create a TRIGGER (however one
does that . . .) However, the Oracle book I've got obliquely advises not
to create too many triggers if I can avoid it for DB performance
reasons. Is there an alternate method? If not, do I have to make a
trigger for each table? Can I get a quick example of how to create a
trigger with this functionality? (I can psuedo-code it but my syntax
resources aren't all that right now.)
- At this point I have a generic SQL book and "Oracle 8i, a Beginner's
Guide," as my central resources. Can you point me to any more dedicated
SQL or migration resources (free and online preferred but I'm not too
picky at the moment ;)
Thanks for your time, and have a great day!
Sent via Deja.com http://www.deja.com/
Before you buy.
Received on Wed May 24 2000 - 00:00:00 CDT
