Synchronizing Oracle with Interbase

Question

Hello Forum,
does anyone made any expieriences with synchronization of Oracle and Interbase databases? How does it work? Are there any tools for synchronizing? Are there any problems?
We want to use Interbase as a remote small footprint database (requirements: deployable on CD-ROM, M$ Windows envrionment, easy instalation without administrator rights, interaction with an delphi-application) and synchronize it than with a centrally located Oracle database.
All in all: is it feasible to do that with Interbase?
Thank you & kind regards,
Katharina Fuhr

Answer 1

user533361 wrote:
The Oracle With can't be used with Update ? The query below can't be compiled, I don't know why.
Thanks.
WITH
tmp_table AS
SELECT
pno
FROM
odetails,
parts
WHERE
odetails.pno = parts.pno
AND
odetails.qty >= 3
UPDATE
parts
SET
qoh = 3 * qoh
WHERE
pno in (select tmp_table.pno from tmp_table)
Hi,
The syntax for subquery factoring is as follows.
WITH subquery_name AS (
SELECT ...
, another_subquery_name AS (
SELECT ...
SELECT ...
FROM subquery_name sq1
, another_subquery_name sq2
WHERE sq1... = sq2...
With other words, the comiler will protest when he find update instead select
HR: XE > with
2 tmp as
3 (select col1,col2
4 from test)
5 update
6 test
7 set
8 col2=33
9 where
10 col2 in(select col4 from test);
update
ERROR at line 5:
ORA-00928: missing SELECT keyword
The following statement are valid for your update expression but WITH tmp_table AS expression is no more necessary (only if your expression in the where clause is very complex) :
UPDATE
    parts
SET
    qoh = 3 * qoh
WHERE
    pno in (WITH
              tmp_table AS
        SELECT
            pno
        FROM
            odetails,
            parts
        WHERE
            odetails.pno = parts.pno
            AND
            odetails.qty >= 3
    )Regards,
Ion