fivetran-arunsuri opened a new issue, #1875:
URL: https://github.com/apache/polaris/issues/1875

   ### Describe the bug
   
   Hey Team,
   
   We are using older version of Polaris repo with eclipse link as metastore 
and that is currently deployed in our production environment.
   I see the major breaking changes in DB schema with both the metastores with 
postgres as backend.
   
   Eclipse link as metastore after being bootstrapped creates  following tables 
in the DB
   
   <img width="628" alt="Image" 
src="https://github.com/user-attachments/assets/9597e839-ab25-4b9a-b664-2e43733927eb";
 />
   
   When I am bootstrapping with Relational JDBC with latest incubating polaris 
repo, the DB schema looks like this
   
   <img width="913" alt="Image" 
src="https://github.com/user-attachments/assets/bb776001-3e1d-4aec-bee6-7267880f80d4";
 />
   
   I see following changes in the DB schema
   
   - Dropped tables: entities_active, entities_change_tracking, 
polaris_sequence, sequence
   - Renamed principal_secrets → principal_authentication_data
   - Added new table: polaris_mapping_records
   - Added realm_id column to existing tables
   - Change default schema from public to polaris_schema
   
   
   We would like to upgrade the Polaris to this latest with relational JDBC as 
we are facing issues with eclipse link as metastore. Was this change made 
ensuring the backward compatibility?
   
   
   ### To Reproduce
   
   _No response_
   
   ### Actual Behavior
   
   _No response_
   
   ### Expected Behavior
   
   _No response_
   
   ### Additional context
   
   _No response_
   
   ### System information
   
   _No response_


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