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From "ASF subversion and git services (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (ATLAS-3056) update rdbms types to remove use of ownedRef/inverseRef constraints for relationships
Date Fri, 22 Feb 2019 18:52:00 GMT

    [ https://issues.apache.org/jira/browse/ATLAS-3056?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16775502#comment-16775502
] 

ASF subversion and git services commented on ATLAS-3056:
--------------------------------------------------------

Commit f103e1438bbfc0c61912ded3551e22578876fbbe in atlas's branch refs/heads/master from Madhan
Neethiraj
[ https://gitbox.apache.org/repos/asf?p=atlas.git;h=f103e14 ]

ATLAS-3056: updated rdbms types to remove use of ownedRef/inverseRef


> update rdbms types to remove use of ownedRef/inverseRef constraints for relationships
> -------------------------------------------------------------------------------------
>
>                 Key: ATLAS-3056
>                 URL: https://issues.apache.org/jira/browse/ATLAS-3056
>             Project: Atlas
>          Issue Type: Improvement
>          Components:  atlas-core
>            Reporter: Madhan Neethiraj
>            Assignee: Madhan Neethiraj
>            Priority: Major
>
> RDBMS types use following attributes, with ownedRef/inverseRef constraints, to create
relationships between entity-types:
> - rdbms_instance.database, rdbms_db.instance
> - rdbms_db.tables, rdbms_table.db
> - rdbms_table.columns, rdbms_column.table
> - rdbms_table.indexes, rdbms_index.table
> - rdbms_table.foreign_keys, rdbms_foreign_key.table
> These attributes are not necessary, as corresponding relationship-types (already present
in the model) will automatically inject the same attributes as relationship-attributes.
> Above change has several benefits, including:
> - improved performance, due to use of only one edge between two related entities (compare
this to 2 edges when ownedRef/inverseRef constraints are used)
> - simper to update a container entity, as there is not need to provide all contained
entities; same for contained entities as well



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