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I am using PowerDesigner to model my SQL Server database. I am creating a Physical Data Model. My problem is that comment data does show "???" instead of a text I entered.

Does anybody know how to get the root of the problem?

pascal
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Naghme Khajeh ali
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  • Where do the comment data show "???"? Do you execute the generated script, and look the comment inside SQL Server? Which character set are you using outside ASCII? May I suggest Arabic letters? – pascal Jun 13 '20 at 18:19
  • Internally PowerDesigner represent letters as UTF-16. So the problem would be with script generation. Or do you execute the script outside PowerDesigner? – pascal Jun 13 '20 at 18:21
  • in table properties it shows me "???" in comment field. I also add that this model is worked correctly and showd persian letter which we add to model in comment field. – Naghme Khajeh ali Jun 23 '20 at 06:14
  • maybe this problem is due to reverse enginieering setting – Naghme Khajeh ali Jun 23 '20 at 11:35
  • How did you reverse engineer? From script, or from database connection?... – pascal Jun 23 '20 at 16:14
  • from database connection – Naghme Khajeh ali Jun 24 '20 at 06:46
  • AND ALSO BY FILE-REVERSE ENGINNERING -DTABASE -UTF8 – Naghme Khajeh ali Jun 24 '20 at 07:44
  • As I mentioned under my answer, the DBMS definition is incorrect. You could try to edit your DBMS (`Database > Edit Current DBMS`) to try it, under MSSQLSRV2016::Script\Objects\Table\TableComment for generation, and MSSQLSRV2016::Script\Objects\Table\SqlListQuery for reverse... – pascal Sep 10 '20 at 09:25

1 Answers1

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I will not answer the question. I've just tried something which looks like what you mentioned in your question.

I started with a Physical Data Model (initially a Conceptual Data Model: entity Employee; Manager inherits from Employee; Manager relates to one-to-many Employee). With some persan comment (using Google Translate), initially on Manager.

Initial physical model, one table with comment

I generate the database creation script, using the UTF-8 encoding.

Script generation options

This gave me this script:

create or replace table EMPLOYEE 
(
   EMPID                char(10)                       not null,
   MAN_EMPID            char(10)                       null,
   constraint PK_EMPLOYEE primary key clustered (EMPID)
);
comment on table EMPLOYEE is 
'اولین و مهمترین وظیفه شما به عنوان یک رهبر مسئولیت این است که انرژی خود را به عهده بگیرید و سپس به ارکستر کردن انرژی اطرافیان کمک کنید.';
create unique clustered index EMPLOYEE_PK on EMPLOYEE (
EMPID ASC
);
create index RELATIONSHIP_1_FK on EMPLOYEE (
MAN_EMPID ASC
);

Then I reverse this script using File > Reverse Engineer > Database..., making sure to select the proper encoding:

enter image description here

Which retrieves the table comment:

enter image description here

What do you do differently?

pascal
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  • Not the same context, but I manage to generate/reverse through ODBC connection against a SAP SQL Anywhere 17 database. And retrieve the original comment. – pascal Sep 10 '20 at 08:32
  • OK, I have the same problem when reversing from Microsoft SQL Server 2016. – pascal Sep 10 '20 at 08:46
  • I see: the generated script is incorrect, it should have a N in front of the comment string. The reverse is incorrect, it should convert the comment to nvarchar (instead of varchar) to have an opportunity to retrieve it... – pascal Sep 10 '20 at 09:20