Hi, guys...new guy here. Let me introduce:
I'm a technical writer for B&N.com and I've been using ERwin
Datamodeler 4, release 4.1.2771 to create data dictionaries. I'm not a
DBA, though I'm slowly picking stuff up.
I discovered something yesterday that from my perspective is quite
serious and I wanted to verify that it is indeed an issue.
I have bunches of tables and for some tables, I have
triggers...anyw here from 1 to 6 of them for a table. Yesterday, I
noticed that triggers appeared in SQL Query Analyzer that didn't
appear in ERwin and after a long conversation with CA tech support, it
was determined that ERwin doesn't properly support showing all
triggers for a table when more than one trigger for that table
performs the same action; insert, uipdate, or delete. When it finds
more than one, it only shows one of them and ignores the others.
As anyone found this to be true? There is a kludge workaround...us e
SQL Enterprise to script out the database, then perform a reverse
engineer on the script rather than the database, but that sucks.
Has anyone else noticed this?
John Posada
3  2694 
John Posada (jp*****@book.c om) writes: I have bunches of tables and for some tables, I have
triggers...anyw here from 1 to 6 of them for a table. Yesterday, I
noticed that triggers appeared in SQL Query Analyzer that didn't
appear in ERwin and after a long conversation with CA tech support, it
was determined that ERwin doesn't properly support showing all
triggers for a table when more than one trigger for that table
performs the same action; insert, uipdate, or delete. When it finds
more than one, it only shows one of them and ignores the others.
As anyone found this to be true? There is a kludge workaround...us e
SQL Enterprise to script out the database, then perform a reverse
engineer on the script rather than the database, but that sucks.
I don't use ERwin, but PowerDesigner from Sybase. Whether PowerDesigner
can handle this situation nicely, I don't know, because I don't have
triggers in PowerDesigner, and I never have more than one trigger
per action for the same table.
However, unless the ERwin documentation clearly says that ERwin handles
this, I find it difficult to call it a bug. Sounds more like a limitation
to me. To make an analogy: in PowerDesigner you can only have one table
constraint per table.
As for having more than one trigger per action for a table, I am inclined
to say that just because this feature is there, does not mean that you
have to use it. Since the execution order is undefined, this seems
somewhat risky to me. (Unless you have one INSETEAD OF and one AFTER
trigger for the same action.)
--
Erland Sommarskog, SQL Server MVP, so****@algonet. se
Books Online for SQL Server SP3 at http://www.microsoft.com/sql/techinf...2000/books.asp
John Posada (jp*****@book.c om) writes: Second, about it not being a bug, I'm not asking ERwin to allow me to
create more than one trigger...that situation already exists. I'm only
asking it to show me an accurate representation of what it is.
If ERwin does not have the capabilities to create more than one trigger
on a table, I would expect it to be able to display more than one either.
I did an experiment with PowerDesigner and reverse-engineered a table
which have a load of table constraints. (As I mentioned, PD does not
support more than one table constraint per table.) And sure enough,
only one of the constraints made it into PD.
So, unless you can find some documentation that says that ERwin handles
multiple triggers on a table, my conclusion is that you have run into a
limitation of the tool, and the best suggestion for you would be to
use what even forum for enhancement requestions that CA provides.
--
Erland Sommarskog, SQL Server MVP, so****@algonet. se
Books Online for SQL Server SP3 at http://www.microsoft.com/sql/techinf...2000/books.asp
Thanks, I'm working on it.
John Posada
*** Sent via Developersdex http://www.developersdex.com ***
Don't just participate in USENET...get rewarded for it! This thread has been closed and replies have been disabled. Please start a new discussion. Similar topics | |
by: Erwin Purner |
last post by:
SWNoIGJpbiB2b20gMTMuMDguMjAwMyBiaXMgMDguMDkuMjAwMyBhdd9lciBIYXVzLg0KDQpJY2gg
d2VyZGUgSWhyZSBOYWNocmljaHRlbiBuYWNoIG1laW5lciBS/GNra2VociBiZWFudHdvcnRlbi4N
Cg==
|
by: vegasthornton |
last post by:
What's better? Need to determine whats better. Doing quite a bit of DB
work on MSSQL.
|
by: Alex |
last post by:
Hello everybody,
does ERwin 4.0 support version 8 of DB2 ?
what modeling tools recomended for db design and script generation
for version 8 ?
Thank you
Alex
|
by: Lawrence |
last post by:
I am trying to use ERWin to reverse-engineer a database running on an
AS/400 iSeries database. When the process completes, I end up with an
ERD that has 3 or more instances of many of the tables, plus an entity
for every file on the box, regardless of the library they reside in.
Has anyone else run into this "behavior"? Any ideas on how to make
ERWin look only at the library that the database tables reside in?
|
by: Pantazis Pantazi |
last post by:
Hi Listers,
I need your advice on how to implement our change management
procedures for the databases that we have through CA ERwin.
We have 5 environments (Test,Integ,Prep,Educ,Prod) and all objects are
updated through CA ERwin.
When we initialy decided the process, we used 14 different stages
until the object is created in all 5 environments and obtained all
| | |
by: Sulu's Beard |
last post by:
Hey gang,
I'm evaluating the CA ERWin product for an upcoming data warehousing
project. I'm most excited about the reverse engineering aspect of
this system.
I've sucessfully tested it on a SQL Server 2000 system, however, when
I run it against our iSeries DB2 system (on which our ERP exists), I
encounter errors that essentially say that files are missing from our
SYSCAT library. I'm not an iSeries expert, but I can say that the
|
by: NickName |
last post by:
What I wanted to do is to have ERwin to reverse engineer an Access db
to generate a MS SQL Server 2000 -compatible SQL DDL script. I'll use
it to create tables, keys, indexes (and having ERwin to capture
Access's TABLE/FIELD DESCRIPTIONS) etc structure on a target SQL Server
2000 db, then using DTS to import data in from the Access DB. (Haven't
used ERwin for a while, would not expect it to be able to convert
Access queries and VB-driven...
|
by: Ed Axelrad |
last post by:
I am having some difficulty figuring out how to use ERWIN v. 4 to reverse engineer a DB2 database on an IBM/VSE mainframe. Can anyone help? THANKS.
|
by: so many sites so little time |
last post by:
this time i am going to use the scripts from the book and just change
the names to match what i am trying to do now i just got an error that
i know shouldnt be an error i think. this is the error:
Could add the site entry because: Column count doesn't match value
count at row 1. The query was INSERT INTO home (home_id, header, body,
date_entered) VALUES ('Welcome!', 'What is a Progressive Parent? A
Progressive Parent ...
now i created...
|
by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
|
by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
| | |
by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
|
by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
|
by: TSSRALBI |
last post by:
Hello
I'm a network technician in training and I need your help.
I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs.
The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols.
I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...
|
by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
|
by: muto222 |
last post by:
How can i add a mobile payment intergratation into php mysql website.
| | |
by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
| |
