Re: DB migration : Sybase to Postgres

If I read your email correctly, I see two options
- Apply FK constraints *after* initial data load.
- Load parent data before child data

(You can create the FKs ahead of time, but use the NOT VALID clause; then,
after data is loaded do ALTER TABLE ... VALIDATE CONSTRAINT.)

On 5/25/23 06:30, Sengottaiyan T wrote:
> Is there an option to set novalidate constraints in postgres? In my source
> Sybase DB, table structures are not defined properly (only primary keys
> exist and no foreign key) - I'm making necessary changes on target
> Postgres DB (created tables, identifying relationship between table
> columns with respective team). After creating proper structure on target,
> the next step is to load data - I'm sure there will be a lot of errors
> during initial data load (no parent record found). How to handle it?
>
> On Tue, Mar 28, 2023 at 3:22 PM Sengottaiyan T <techsenko(at)gmail(dot)com> wrote:
>
> Team,
>
> Need some help regarding Open Source tools for DB migration (from
> SYBASE to PostgreSQL) with real time CDC. Along with this, is there
> any possibility to migrate other objects (like Triggers, Stored
> Procedures and Functions) to PostgreSQL?
>
> Thanks,
> Senko
>

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Born in Arizona, moved to Babylonia.