lidavidm commented on issue #2294:
URL: https://github.com/apache/arrow-adbc/issues/2294#issuecomment-3942154737

   This got raised again as https://github.com/apache/arrow-adbc/issues/3988, 
I'll merge that into this since this was first.
   
   ---
   
   CONSTRAINT_SCHEMA exposes which columns on a table reference other columns, 
but not the reverse. 
   
   I think the main question is whether we try to fit this in the existing 
GetObjects schema or expose it under a new function.
   
   - [JDBC: 
getExportedKeys](https://docs.oracle.com/javase/8/docs/api/java/sql/DatabaseMetaData.html#getExportedKeys-java.lang.String-java.lang.String-java.lang.String-)
   - [ODBC: 
SQLForeignKeys](https://learn.microsoft.com/en-us/sql/odbc/reference/syntax/sqlforeignkeys-function?view=sql-server-ver17)
   - BigQuery: https://github.com/adbc-drivers/bigquery/issues/118 (point 8)
   - PostgreSQL: https://github.com/apache/arrow-adbc/issues/3971 (point 13)


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