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Editorial Team
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Asked: 2026-05-24T14:24:22+00:00

Let’s say we have 3 tables for contents , galleries , questions and one

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Let’s say we have 3 tables for contents, galleries, questions and one thable for comments like this:

**Contents**
--------------
ContentID | Title | Body

**Galleries**
--------------
GalleryID | Title | Rank

**Questions**
-------------
QuestionID | Title | Body | SendDate

**Comments**
------------
CommentID | Name | Body | ContentID | GalleryID | QuestionID

What is a standard way to connect Comments table to other 3 tables? Is it right way to use other three table’s foreign keys inside Comments table?

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1 Answer

  1. Editorial Team

    It’s right, but it’s better to have a Commentable Table, from which other 3 tables inherit. something like this:

    Commentable(CID, title)

    All contents, galleries and questions , first should be inserted in Commentable, then in their own tables. So other tables will be like this:

    Contents( CID, Body)
Galleries(CID, Rank)
Questions(CID, Body, SendDate)

    And a comment will be associated with a commentable, so 

    Comments(CommentID, Name, Body, CID)

    and finally, if you need to specify if comment is from a gallery, question or content, you may put a field (i.e. Type) which shows the type of commentable. This way will reduce redundancy and has a more reasonable design.

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