hello Suresh,

I had gone through the documentation for FlywayDB, Though the docs are not very clear, here are my observations

    * FlywayDB doesn't generate delta Scripts like DBDiff does

* It is mainly used to run the migration scripts which are already created by some other means, like the one's we generated using DBDiff

* https://flywaydb.org/documentation/migration/sql - We just point the FlywayDB to a classpath where the scripts are stored, it will run them accordingly.

please correct me if I am wrong, FlywayDB can be used along with DBDiff or Liquibase to bring in automation.

Thanks and best regards,

*Anuj Bhandar*
MS Computer Science
Indiana University Bloomington
+1 812 361 9414


On 01/12/2017 04:34 PM, Suresh Marru wrote:
Hi Anuj,

Have you looked at https://flywaydb.org/ ? Its maven integration caught my attention. Just curios how it compared with the liquibase or dbdiff you have discussed below.

Suresh

On Dec 27, 2016, at 1:31 PM, Miller, Mark <mmil...@sdsc.edu <mailto:mmil...@sdsc.edu>> wrote:

Thanks Anuj, For taking the time to send that, it was super helpful, and answered my questions.
Mark
*From:*Anuj Bhandar [mailto:bhandar.a...@gmail.com]
*Sent:*Tuesday, December 27, 2016 10:23 AM
*To:*dev@airavata.apache.org <mailto:dev@airavata.apache.org>
*Subject:*Re: Database Version Control for Airavata

HI Mark,

Liquibase is a Database Version control tool, it gives you the ability to rollback any changes (commit) on DataBase Schema just like GIT, but it will only be useful for future builds, i.e. if you implement Liquibase in current build, make changes on top of that, then those changes can be rolled back, in short the version to be rolled back should be present in the repository. Works just like GIT for source code.

But if you are referring to Airavata's scenario, i.e. we have two version of DB schema's, one for Development and the other for Production, then a tool like*DBDiff*(https://github.com/DBDiff/DBDiff) compares the two different versions and generates Delta SQL scripts, which can be run on the DB schema's, DBDiff has the ability to generate both UP and Down Migration scripts.

I hope that I have answered the question, please revert back if you need further details.

Thanks and best regards,

*Anuj Bhandar*
MS Computer Science
Indiana University Bloomington
+1 812 361 9414

On 12/27/2016 9:19 AM, Christie, Marcus Aaron wrote:

    Mark,
    Anuj might know more about this but I thought I would chime in. I
    believe this is something that database migration tools can do. I
    haven’t tried that though. Here’s Liquibase’s support for
    rollback scripts:
    http://www.liquibase.org/documentation/rollback.html
    Marcus

        On Dec 25, 2016, at 8:49 AM, Miller, Mark <mmil...@sdsc.edu
        <mailto:mmil...@sdsc.edu>> wrote:
        Hi Anuj,
        Very interesting. I had a question, rather than a vote. We
        have found (at CIPRES) that we really wish we had the ability
        to make DB schema changes and test them and roll them back if
        there is an issue with what we tried. I wonder if this is
        something the new or existing DBs can do in AIravata?
        Mark
        *From:*Pierce, Marlon [mailto:marpi...@iu.edu]
        *Sent:*Friday, December 23, 2016 10:11 AM
        *To:*dev@airavata.apache.org <mailto:dev@airavata.apache.org>
        *Subject:*Re: Database Version Control for Airavata
        +1 for looking into Liquibase. I’d be interested to hear
        other opinions.

        Marlon
        *From:*Anuj Bhandar <bhandar.a...@gmail.com
        <mailto:bhandar.a...@gmail.com>>
        *Reply-To:*"dev@airavata.apache.org
        <mailto:dev@airavata.apache.org>" <dev@airavata.apache.org
        <mailto:dev@airavata.apache.org>>
        *Date:*Friday, December 23, 2016 at 12:55 PM
        *To:*"dev@airavata.apache.org
        <mailto:dev@airavata.apache.org>" <dev@airavata.apache.org
        <mailto:dev@airavata.apache.org>>
        *Subject:*Database Version Control for Airavata
        Hello Dev,
        Merry Christmas ! Hope you guys are doing good.
        As a part of the Airavata 0.17 release, we are faced with a
        industry standard problem of migrating our old master
        database to the new Development database, the effort needed
        to manually write migration SQL scripts is huge.
        Hence for the current release, I'm relying on DBDiff
        (http://dbdiff.github.io/DBDiff/) for generating Delta SQL
        scripts for the entire database and manually write scripts
        for complex DB schema changes.
        To address the issue in future releases, I propose to
        implement a database version control system like Liquibase
        (http://www.liquibase.org/) for Airavata, this will help
        automate the creation of delta scripts and also adding
        additional functionality like backward compatibility between
        releases.
        Please feel to suggest changes and also comment about the
        products I'm using to accomplish these tasks.
        Thanks and best regards,
        *Anuj Bhandar*
        MS Computer Science
        Indiana University Bloomington
        +1 812 361 9414



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