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* Data Versioning
@ 1970-01-01 00:00 Sunit Bhatia <[email protected]>
2001-08-02 02:13 ` Re: Data Versioning Yasuo Ohgaki <[email protected]>
2001-08-02 02:46 ` Re: Data Versioning Barry Lind <[email protected]>
0 siblings, 2 replies; 4+ messages in thread
From: Sunit Bhatia @ 1970-01-01 00:00 UTC (permalink / raw)
To: pgsql-general
Does any body know if pgsql supports any kind of versioning of binary
objects or data. e.g. If I'm storing a binary file in a row of a table, I
would want to see different versions of the same biary file. Everytime I do
a write, the version number should be bumped up !!
Is it possible to do it in pgsql or any other databases.
I'm using JDBC for connecting to database.
thanks
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^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Data Versioning
1970-01-01 00:00 Data Versioning Sunit Bhatia <[email protected]>
@ 2001-08-02 02:13 ` Yasuo Ohgaki <[email protected]>
1 sibling, 0 replies; 4+ messages in thread
From: Yasuo Ohgaki @ 2001-08-02 02:13 UTC (permalink / raw)
To: Sunit Bhatia <[email protected]>; +Cc: pgsql-general
> Does any body know if pgsql supports any kind of versioning of
binary
> objects or data. e.g. If I'm storing a binary file in a row of a
table, I
> would want to see different versions of the same biary file.
Everytime I do
> a write, the version number should be bumped up !!
With PostgreSQL, you can create RULE to keep old values.
(Much easier than other DB, thanks to RULE)
Refer to PostgreSQL manual for details.
Yasuo Ohgaki
^ permalink raw reply [nested|flat] 4+ messages in thread
* Re: Data Versioning
1970-01-01 00:00 Data Versioning Sunit Bhatia <[email protected]>
@ 2001-08-02 02:46 ` Barry Lind <[email protected]>
1 sibling, 0 replies; 4+ messages in thread
From: Barry Lind @ 2001-08-02 02:46 UTC (permalink / raw)
To: Sunit Bhatia <[email protected]>; +Cc: pgsql-general; [email protected]
You should be able to easily design a database schema that does what you
want. For example two tables,
files
------
file_id (PK)
file_name text
...
file_versions
-------------
file_version_id (PK)
file_id (FK to files.file_id)
version integer not null
data oid not null
...
Then when your application creates a new file you would insert a row
into both the files and file_versions table. When your application
'updates' a file it just inserts into the file_versions table the new
version.
There is no explicit support for what you are trying to do native, and I
don't know of any other databases that support that type of
functionality either (at least I know Oracle does not).
thanks,
--Barry
Sunit Bhatia wrote:
> Does any body know if pgsql supports any kind of versioning of binary
> objects or data. e.g. If I'm storing a binary file in a row of a table,
> I would want to see different versions of the same biary file. Everytime
> I do a write, the version number should be bumped up !!
>
> Is it possible to do it in pgsql or any other databases.
> I'm using JDBC for connecting to database.
>
> thanks
>
> _________________________________________________________________
> Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp
>
>
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^ permalink raw reply [nested|flat] 4+ messages in thread
* Data Versioning
@ 1970-01-01 00:00 Sunit Bhatia <[email protected]>
0 siblings, 0 replies; 4+ messages in thread
From: Sunit Bhatia @ 1970-01-01 00:00 UTC (permalink / raw)
To: pgsql-general
<html><div style='background-color:'><DIV>Does any body know if pgsql supports any kind of versioning of binary objects or data. e.g. If I'm storing a binary file in a row of a table, I would want to see different versions of the same biary file. Everytime I do a write, the version number should be bumped up !!</DIV>
<DIV> </DIV>
<DIV>Is it possible to do it in pgsql or any other databases. </DIV>
<DIV>I'm using JDBC for connecting to database.</DIV>
<DIV> </DIV>
<DIV>thanks</DIV></div><br clear=all><hr>Get your FREE download of MSN Explorer at <a href='http://go.msn.com/bql/hmtag_itl_EN.asp'>http://explorer.msn.com</a><br></html;
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1970-01-01 00:00 Data Versioning Sunit Bhatia <[email protected]>
2001-08-02 02:13 ` Yasuo Ohgaki <[email protected]>
2001-08-02 02:46 ` Barry Lind <[email protected]>
1970-01-01 00:00 Data Versioning Sunit Bhatia <[email protected]>
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