Re: Looking for oracle/sql tutorials and advice
Date: Sun, 27 Apr 2008 20:04:12 GMT
"travel2light" <everything2light_at_yahoo.co.uk> wrote in message
> On 27 Apr, 08:28, William Robertson <williamr2..._at_googlemail.com>
>> 1. I'm not sure if you want to reorganise your schema design, move
>> data between tables (insert ... select) or restore to a point in time
>> (select ... as of timestamp ..., or flashback table/database though I
>> don't think XE provides that). Did you delete the original data?
> I didn't delete the original data, but it was replaced with an ID
> corresponding to the data in the lookup table. So for example the
> employees table had a column called 'JOB_ID'. What has happened is
> that all the JOB_ID's have been automatically moved to a separate
> table with a Unique Key - and the JOB_ID column (in the employees
> table) was replaced with a new column 'JOB_ID_ID' which has values
> corresponding the the Unique Key on the new lookup table. I did this
> by mistake (it is a redundancy because there is already a table called
> 'jobs' which lists all of the Job_ID's and their definitions).
> I haven't learnt how to do restorations or reorganising schema design
> or flashbacks. Maybe I am jumping ahead of myself.
>> 2. I'm not sure this has much to do with foreign keys. It sounds like
>> an Application Express question about how to define a button that pops
>> up a selection list populated from a query. I'm sure there there's a
>> way but I'm afraid I don't know Apex.
> I haven't studied Application Express yet so I don't know if that is
> what I am looking for. I noticed that oracle will display a button (on
> a form) for entering dates. This is the kind of thing I am looking
> I'm beginning to realise that I am probably jumping too far ahead of
> myself. I think what I really need is a road map of progressive topics
> I need to study. Are there any books or tutorials that explain the key
> concepts of oracle without going into too much detail?
You can go to otn.oracle.com and they have what are called 2 day dba tutorials. They are online and self paced and free. Start there. Jim Received on Sun Apr 27 2008 - 15:04:12 CDT