Simplicty and flexibility!


Visitors: 14,260,259

Radioboxes - how to filter on them and clear them

Download Sample

You can of course add a choice (default maybe) that is None or something like...

Written by DataEase 01/02/21 at 11:08:34 Dataease [{8}]FIVE

DE9 - A quick preview of the NEW interactive DQL editor.

Just a quick preview to show you all that we are not just relaxing here at DataEase

As you can see it is just a simple test done in the "horrible" Club ParaDEASE. Enjoy

Written by DataEase 18/11/20 at 21:06:06 - 4 people have commented. The newsest comment is 7 days old. DataEase 9 Developer

How to edit RDRR file to connect lost files.

All of you will at some stage get the problem when you change a form/table that it crash and the file is "lost". 

it is never lost.

The data is still there in a Temp Form XXX table. The problem is that the change crashed in the mi...

Written by DataEase 10/09/20 at 13:33:54 Dataease [{8}]FIVE

"System error: Relationship limit 255 exceeded. " - Understanding Relationships in DataEase

In regular intervals we get support request in regards to this message and what you can do to increase the limit to OPEN relationships in DataEase.

If you are "lucky" you get this problem wi...

Written by DataEase 03/09/20 at 10:53:34 Dataease [{8}]FIVE

DE85- 100% control of the USER!

Download Sample

We got a request on the form about how to use Modal and switch between f...

Written by DataEase 19/08/20 at 14:32:40 Dataease [{8}]FIVE

Beta 33% 09.11.19 - A Dataease version fully built in - Dataease

The time has come and today we let the cat out of the bag - for the first time we let anyone outside our closet partner network see and play with DE9.

We call it Beta 33% but don't make that put you off. It is a fully working replacement for DE8.5 which was the first milestone we wanted to reach before we let it out.

However it is much more than that which you will quickly find out. The reason we call in 33% is because it is at this stage only 33% of our ambition for DE9.

So within these 33% you find all the functionality from DE up to and including 8.5 final with over a 100% new functionality partly revealed today and to be revealed and evenly spaced out increments over the next 3 months.

100% DataEase

LegEasy4DOS Professional is a "pioneer" that showcase the future of DataEase.

No! The future is not retro, and the bit about it that is pioneering is not the fact that you can fun DataEase for DOS applications.

That feature is basically just how it should always have been and a catch-up with our history.

Take a closer look - The entire product is made IN DataEase following up on a "slogan" we had when we sat out to refurbish DataEase.

DataEase need to be made in DataEase!

LegEasy4DOS - How it works?

The interest in LegEasy4DOS has been "overwhelming" since we released it at the end of last week.

A lot of eagerly awaiting Professional clients jumped at it and the feedback was not late to come.

Most of you are overjoyed and excited by this opportunity to run DataEase for DOS in a modern environment, and more than happy to scrap your old XP computers and Novell servers that has kept you up at night with worry - when will it draw its last breath and what will I do then?

However not all feedback is good and some of you have been "disappointed" too.

Some of this disappointment is down to us having problem with our server park after the release due to an unexpected heavy load - don't they always say that - but some of you have been running bench mark tests and compared it to "Native" DfD on Native XP, WIndows 7 x32 etc. and the results has baffled you.

Why is it sometimes much slower and then sometimes much faster than the comparison?

In the article below we will try to explain this and how LegEasy4DOS is designed and how it works.

LegEasy4DOS Professional Release 05.08.16

The response to our Personal version of L4D has been fantastic and it has given us great motivation in the work leading up to the release of our long awaited Professional version of L4D.

We won't spend too much time extrapolating its virtues here but limit ourselves to announcing it's release and showcase its beauty ;-)

Further down the article you will find the FREE FOR ALL Trial Key you can use to get the first "spin" in this brand new interpretation of DataEase (for DOS).

New Support Manager and new Support Products introduced

For a long time we have been focusing on improving our software products, but we have now entered a new phase where we will focus more and more on the entire customer experience.

One issue that has been raised more often than others is the lack of a dedicated support service so this is one of the areas were we will now focus.

Last month we hired Fatma Adel as our new Support Manager. She has now had some time to settle in and are more than eager to start helping you resolve your issues.

LegEasy 4DOS - Update!

We are and should be very happy when an upcoming release of a DataEase product cause this much of a stir, but it is also a sobering moment.

We obviously still have some catching up to do with our new products before they reach the same popularity as the early versions of DataEase.

Luckily the "re-launch" of DataEase for DOS is part of our DataEase infrastructure strategy so you will now be able to run your legacy apps well into this century when at the same time integrate them with the latest DataEase technology.

Locking Strategies for dummies!

Ever wondered why you have so much trouble with inconsistency and being locked out of your DataEase database? If the answer is YES, read one and discover how you can easily remedy it.

Full, Basic, Opportunistic - What does this really mean? We get a lot of questions about which locking to choose in DataEase, and the answers we have give - are giving, have changed over the years. I guess that if this was a simple as it "should be", there wouldn't even be three options in DataEase, and we wouldn't leave this is in your hands.

I have spent quite a lot of times over the years debating and exploring this myself, and the problem is that it is more of a philosophical problem, than a technical one. Pictures this as going into a Chinese restaurant and ordering. You get a many with 500 items, and you are vaguely familiar with 3 of them, so what do you do. Choose what you know, or go for the set menu...

[{8}]five Release and Release program.


DataEase {[8}]five went into production today and from now on it will be all about 8.5 and beyond.

We have now concluded the longest Beta program in DataEase history - 427 days or over 1 year and 2 months.

So why so little fanfare on this watershed day?

Warning! Price increase on DataEase 8 from January 1st

We are changing how we license DataEase from Januar 1st 2016.

In short we will stop dividing licenses (and executables) in Developer (Full) and GROUP (Runtime) and introduce a simple User License and one executable that will be either a development environment or a Application Launcher based on the users privileges.

The change might seem dramatic at first, but you will get much more functionality and flexibility.

This is just an early warning to those of you that plan to buy DataEase 8 in the near future, more information on the change in product and licensing strategy will follow.

Dynamic Design - A New paradigm in DataEase development

ExecDQLClass(), CreateTable(), AddColumn()* signify a complete breach with previous DataEase thinking.

From its infancy in the early 80ies and throughout its life until DE8 there was a clear divide in DataEase between Design and Runtime. (At least in the head of the designers, but the fact that most people used it interactively and added and changed to it in real time was not taken into account)

Tables, Scripts, Forms, Reports was froozen in runtime and there was few if any way you could make your application dynamic.

How this has changed in 8....

How to create CDFs for use in DE8/DG3

This is how you create your own CDFs using Visual Studio 2013. I selected to use this version because any one can get a full version for free as long as you register with MicroSoft. You should be able to recreate this in any version of Visual Studio in almost the same way as described here. Not much has changed in creating Windows DLLs in the last 20 years. You probably can do the same using other compilers as MinWin GCC and Embarcadero, but that is outside the scope of this document.

Migrating from DFW 5.x and 6.x to DE8.5 including National Versions

If you want to encompass DataEase problems in one word it must be Migration. It is fascinating that a company that has had so little success with this concept, has sworn to it for such a long time.

It is a badly hidden secret that DataEase lost most of it users in the flawed and bodged migration of DFD application to early DFW, what is maybe not so well know is all the other "unsuccessful" migration events.

In this article we will explain what/why and how it went wrong and what you can do to work around it.

We reached our 1.000.000 visitor today 23rd of February 2015

At the beginning of the year we had estimated that we would get our 1.000.000 visitor at the 6th June this year, but with the Beta of 8.5 and the great feedback we have seen both visits on our website and sales sky-rocket and we reached the 1.000.000 threshold more than a Quarter ahead of schedule!

We just have to thank you all for your patience with us, and for your contributions and support throughout the last couple of years since we took charge.

We both hope and feel that our efforts and enthusiasm for DataEase has been well received and are reciprocated by you all!

A wholehearted thank you to your all from "The DataEase Team".

NEW! Functions in DataEase 8.0 to 8.5 (Page 1)

Some of you might be aware of it but it seems a lot isn't so it might be time to advertise a little the vast number of new functions and functionalities that has been added to DataEase 8.0 through 8.5.

For a long time the only way new functions found their way to DataEase was through active and ingenious users which developed CDF's. As much as the CDF's alleviated the obvious short-comings in DataEase 5.x to 7.2 it was cumbersome, undocumented and "secretive" i.e. not everyone was in the know.

With 8.x we decided that the focus needed to be on moving DataEase forward, rather than the constant dance around the "bug fixing" fire.

Have a look and a try for yourself.

Due to the number of new functions we had to publish the short description in two articles, of which this is the last.

Also have a look on the blog synopsis found in the list to the right.

Start your own thread!

09/04/21 11:41:56

Re:Re:Re:Re:Re:Re:Re:Re:Re:Bad DB Version 3.

despite of the deleting of my previous comment will double it as an idea which will be useful.

the reason is in that obvious thing of non existence  of one-to-one correspondence between so called DOS (an alphabetic-digital) environment or interface and Windows (GUI). all software tools are simply artificial languages. when transforming dos application to windows app we'll lost useful or get useless or even bad set of something called information. to avoid this situation they have did what they did 20 and more years ago. as to DE9 all you have to take this into account and forget about chance to make similar to dfd product. no frustration then. we'll overcome. 


Product: Dataease [{8}]FIVE

Written by: Ihor Zakharchenko

08/04/21 16:17:16

Database Links

Hi All,

Just wondering if anyone has had any experience linking DataEase 8.5 to PostgreSQL tables via ODBC. PostgreSQL is apparently a popular open source database that many companies are using instead of Oracle, SQL Server and others.


Product: Dataease [{8}]FIVE

Written by: Bolt-on-Trailers

06/04/21 14:21:02

Re:Re:Re:Re:Re:Re:Re:Re:Bad DB Version 3.

A rock and a hard place at the moment.
The migration of DFD layout to DFW was so poor from the start that it was hardly worth anything...

Which is why they simply removed it in 5.x/6.x (Yes it is confusing that the versions number between DFD and DFW is harmonized but with 1 higher in DFW...) 

Only the people in charge at the moment can answer for the decisions that was made. One would assume that the natural approach to something not working would be to fix it but there is sadly a pattern in DFW that challenges was removed rather being repaired.

When looking in the code one can see that there was work undertaken in 5.x/6.x to allow separate layout on shared DQL's between DFW and DFD but this was abandoned without ever being released. Again why can only be answered by the people present at the time(20 years or more ago).

Our approach to this now is to support legacy products through the LegEasy program, where the focus is to allow users to run old applications rather than focus on migration and conversion.

So if you want to migrate a DFD 4.x application to a modern DFW version you have to either go via DFD 5.x or DFW 5.x and neither route is ideal.


Product: Dataease [{8}]FIVE

Written by: DataEase

05/04/21 09:59:10

Re:Re:Re:Re:Re:Re:Re:Bad DB Version 3.

The downside of selecting V5 in LE4DOS is that when migrating afterwards the Form layouts and Procedures are apparently lost.

I took the database through DFW550 and thence to the V8.5 migration tool in order to keep them.


Product: Dataease [{8}]FIVE

Written by: Peter Birney

29/03/21 23:58:26

Re:Direct Mass Emailing Documents fro LegEasy4Dos


We do fun stuffs like this all the time with DataEase for Windows. I don't think using LegEasy4DOS will be an issue. 

If you like us to take this chargeable project, please contact us via email at

DataEase Partner


Product: LegEasy DOS

Written by: Jeyarajah Arulrajah

27/03/21 14:20:53

Re:Re:Re:Re:Re:Re:Bad DB Version 3.

L4D is a "people pleaser" Pete so it will run a 4.x app as 4.x and and a 5.x app as 5.x

It wont migrate or do anything to the application if you don't want it to.

The only thig you need to move an application from 4.x to 5.x is to open the session in l4D and switch the version from 4.x to 5.x and run it.


Product: Dataease [{8}]FIVE

Written by: DataEase

27/03/21 12:58:38

Direct Mass Emailing Documents fro LegEasy4Dos

How do I send customized statements to customers directly from my LegEasy4Dos application? Prefer if I can send PDF Documents attached to each user's email note.


Product: LegEasy DOS

Written by: Morgen Mufowo

27/03/21 09:05:53

Re:Re:Re:Re:Re:Bad DB Version 3.

Just to be pedantic (Nothing new there!), could you confirm that even though the application has been run using L4D, it is not updated/marked as having been "opened" using anything other that its original DFD Version (I have opened the database in question in DFD4.53, its original version).

I had believed that it would have been updated/marked as a V5.x database, which is why i went straight to use the V8.5 Migration tool.


Product: Dataease [{8}]FIVE

Written by: Peter Birney

26/03/21 18:02:08

Re:Re:Re:Re:Bad DB Version 3.

The problem is that the Application is older than DFD 5.x

You can only migrate from DFD 5.x onwards.

So you need to migrate to DFD 5.x first.


Product: Dataease [{8}]FIVE

Written by: DataEase

26/03/21 15:43:26

Re:Re:Re:Bad DB Version 3.

Here is the RDRR file if it is of any use.


Product: Dataease [{8}]FIVE

Written by: Peter Birney

25/03/21 16:07:49

Re:Re:Bad DB Version 3.

This is the only message that i receive.  Please see attached log file.


Product: Dataease [{8}]FIVE

Written by: Peter Birney

25/03/21 15:55:08

Re:Bad DB Version 3.

Does the application migrate or does it end with this message?


Product: Dataease [{8}]FIVE

Written by: DataEase

25/03/21 15:53:46


You can delete in Explorer.

you will find all the styles you have "cloned" in your app. The extension is .STY.


Product: Dataease [{8}]FIVE

Written by: DataEase

25/03/21 14:09:53

Bad DB Version 3.

I am running a test migration in Version 8.5 of a system currently running under LegEasy4DOS and I am getting this error.

Can anyone point me to why this is happening?


Product: Dataease [{8}]FIVE

Written by: Peter Birney

22/03/21 11:13:10

How can i delete a Style sheet?


Product: Dataease [{8}]FIVE

Written by: Rainer

11/03/21 19:30:48

Re:Running Applications on Cloud

We already run applications on but it will not be published as a general product until the after the release of DE9.

If you have an application that need hosting please send an email to with your requirement.


Product: Not product specific.

Written by: DataEase

11/03/21 12:40:33

Re:Window Size legeasy

Dear Roland, but of course ;-)

DataEase for DOS has many mysterious ways and one of them is the order of files read and how to magically get what you want.

The solution to your problem involves two things.

1. Adding an Advanced Setting to your L4D profiles Config.sys

And then copy this ZTERMDEF.DBZ file into your application catalogue.

You will need to unzip it first of course.

DataEase read files in the order, App path, SharedPath,DataEase Path. So you can also put it together with your share files but the safest is simply to drop it in with your application files and problem solved. This way the setting will only affect this application and not all your DFD apps.


Product: LegEasy DOS

Written by: DataEase

11/03/21 12:38:34

Window Size legeasy

Dear Sirs,
I am planning to use legeasy for my DFD5.15 application.
I need a 50 line screen, my trial test version admits only 25 lines.
Can I change this?

Best regards Roland 


Product: LegEasy DOS

Written by: Roland Neudeck

05/03/21 12:03:24

Re:Table name already exist - Method to avoid this problem recursively

The problem is related to an automated update routine that look after the Status tables in DFW. 

When it identify that the current version is "outdated" it will replace it and if this replacing goes wrong you get your problem.

As it is highly annoying and these tables are not critical we have in future versions removed this old fashioned updating approach.

However they are still there in 8.5 so what you can do to stop this from happing is to syncronize the files "manually".

I.e. set the 0e to 0f on all occurences of DQL info in the rdrrr and delete all files that correspond to the entries in the app.
Then start over and DE85 will create the latest version and after that it will be in sync.


Product: Dataease [{8}]FIVE

Written by: DataEase

05/03/21 11:58:19

Re:User Logs

You can do this if you log the changes in the app. There is no built in functionality that logs all changes to the data.

You can either log it in the record by adding a field for LastChangedUser with derivation: current user name and a LastChangedTime with derivation: Current date and one for time: current time or a combined one (datetime). concat(current date,current time)

These fields should be write protected.


Product: Dataease [{8}]FIVE

Written by: DataEase

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