Multiprovider design -problem

I am just creating the multiprovider on Custom Billing cube and Custom DSO .
In my billing cube , I have Billing document assigned to line item dimension
and Line item is also in another in another line item diemsion .
My DSO have Billing document number , Item number and Partner function as primary key .
Could you please let me know how should be my MP design ?
How to create a dimension in Multiprovider ?
Can I assign the Billing document from cube and Billing document from DSO to the same diemsion ?
How to figure out the Partner function Characterstic of DSO which is primary key of DSO but not having this fields in billing cube . ?
There are 2 other data fields available in DSO which is not there in Billing cube , Do i hv to create a new dimension for them ?
Please help me soon .
Regards

Can I assign the Billing document from cube and Billing document from DSO to the same diemsion ?
You can create a single dimension for this, in that you can use Billing document and right click assign/identify from the both DSO/Cube.
How to figure out the Partner function Characterstic of DSO which is primary key of DSO but not having this fields in billing cube . ?
Create separate dimension for these Partner function Characterisitcs
There are 2 other data fields available in DSO which is not there in Billing cube , Do i hv to create a new dimension for them ?
If those data fields related to Billing Document, then you can add these two fields to fisrt dimension (Billing Document Dimension).
Hope you get some idea.
Veerendra.

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Yes this is a common problem that many of us have when building UIs
Here's the question: In this instance, are these two classes really independant? Could they stand alone? Often when building a GUI, it's not even that easy to answer that question, but these leads to the two ways you can solve this
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Design problem about repreatable entity relationships

Hi all!
As I design the data model (let's name it the ERD, no matter the name is quite unfashonable), I have found almost identical structures of entities and relationships between them, but playing completely different roles in the semantics of the model.
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Thanks in advance!
Marcin Gawlik

Again me - I now it is a bad idea to reply for own messages, but I have just checked a new idea:
The problem was about re-using the same components in different roles. I tried to do that by creating subclasses of the EJB classes, but it did not work. So I tried to define multiple entity EJBs that have the same class.
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Design problem/Exercise Book

Hi Everyone,
I am new to Labview. I just started with Labview 2011 student edition and I am following Bishop's book. But I also want a tutorial book with lots of design problems and exercises to get my skills. I am a postdoc in purdue and I started learning LabViews just because I want to learn (I am facinated by the G programming. I use it in my instrument but the departmental engineers wrote it and I want to have the same type of skills. I am also intending to become CLD). Can anyone suggest me any book or any website where I can find exercises and design problem? Thank you everyone.
Cheers!
Solved!
Go to Solution.

Ekram wrote:
Hi Everyone,
I am ...Can anyone suggest me any book or any website where I can find exercises and design problem? Thank you everyone.
Cheers!
You found it!
Get involved answering questions (gird up your loins) and let others hammer you into submision. Don't fall into the trap of writing code and posting VIs on demand, but rather post images of how you want to solve the posted question and let others feedback.
Have fun!
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction

Design problem with JScrollPane

First, I have problems with english. I hope u understand without problems that Im trying to say here. Sorry about that.
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Gracias.

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Multiprovider design (InfoObject assign) and query dehavior

Hi experts,
we have a hetergenous multiprovider, it has several InfoCube as the basis cube. when execute the query, it will display some duplicated records.
1) the two duplicated records are exactly the same, including characteristics, navigational atrribute, key figures.
2) the two duplicated records have the same characteristics, navigational attribute, with some of different key figures .
It's very hard to identify the root cause why for some of the records, it will have duplicated records. Meanwhile, I have some question for the multiprovider design..
For example, now we have 4 InfoCube..
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1) what will happen , if I include 0plant and 0material as the rows in the query designer, will this cause some duplciated records ?
Now , 0Material, have the navigational attrribute, 0mateiral_0matl_type, If I only 3 Cube has the
0mateiral_0matl_type Open and assign into the Multiprovider..
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2 ) Is there any influence to retrieve the record ? I am not sure if 0Material are correctly assigned, 0material_matl_type will influence the result (number of records), or will this cause duplicate records ?
I think in some of the case, in the sub -cube, not all the required InfoObject, or navigational attribute are avalable at the ALL Cube level, but in the query level, they are used.
Finally, what could be the reason for duplicated records ?? they should be merged after execution..
Please share your comments. Thank you very much.
Best Regards,
muwenziwu

HI muwenziwu,
If you iunclude any characteristics or a navigational attribute which is not common in both the infoproviders
then the it will show the result in a seperate line ,
But you have a option to overcome this , refer the How to document in the below link
http://www.sdn.sap.com/irj/scn/index?rid=/library/uuid/70dcd7b5-6a3d-2d10-c984-e835e37071a2
Hope this helps
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Hi Thomas,
Instead of the architecture what you are thinking try the architecture explained in the following link:
<a href="https://www.sdn.sap.comhttp://www.sdn.sap.comhttp://www.sdn.sap.com/irj/sdn/go/portal/prtroot/docs/library/uuid/f4d79e59-0601-0010-0689-89670315bc6b">link</a>
Dont forget to award points on helping answers
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sid

Design problem: RS232 communication

Hi,
I have a design problem for communication with a device via RS232. Since I'm normally a C++ programmer I might just look at the problem from a wrong angle and hope for some hints how to do it in LabVIEW.
The scenario:
A device is communicating with the PC via RS232. The device permanently sends data packets. At the same time, commands can be sent to the device and it returns replies. Data packets and reply packets are arbitrarily mixed, i.e. after sending a command there could be a couple of date packets before the reply comes back but the packets can be distinguished by an identifier.
At least one, ideally several VIs should communicate with the device. Commands should be sent by pressing buttons and the incoming data should be parsed (the packets contain mutliple data streams) and shown on graphs or saved to files.
My initial idea:
Coming from C++ I wanted to build a class for the communication that permanently reads the incoming data and splits it to reply and data packets. This class would then have a function to send out a command and would return the reply or a timeout and it would be possible to register and unregister listeners (I wanted to use queues for this) for the various data streams.
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There were a couple but the two most pressing problems were: how could I communicate with the constantly running sample VI (e.g. to stop sampling) and how could I propagate changes to the class to it (e.g. new listeners). Since it is not returning I don't see a good way to implement it as in instance funcion (i.e. pass it the object). I could probably not let the sample function run continously but call it periodically from outside. However I planned to implement the class as a singleton, so it could be used parallely from different VIs.
Is there a best practice for a case like this?
I'm glad about any hints or ideas.
Thanks,
Tobias

tfritz wrote:
Hi,
thanks. Since almost the same thing was suggested to me in a German forum I guess this is really common practice (using one VI with different methods controlled by a queue). It still seems a little "unnatural" for me but my biggest concern (bad interface description) was shattered by the suggestion in the link you sent me to wrap these functions with wrapper VIs, thus caller VIs won't have to deal with the call-by-queue-mechanism. This might also be easier to port to a different implementation later. However I still see the danger that the continously running VI could easily become bloated.
It also requires me to change the way I have looked at VIs until now. In our course they told us that VIs are basically functions. Using this design patterns, the VI becomes more of a module, really (Like a C module implemented in a C-Source file). But I will try it. It sounds as if it could work.
I will still look into the OOP solutions a little more, though. Do I understand you correctly that you wouldn't recommend using LVOOP because it's still buggy? What about dqGOOP for example? This sounds like it could do what I need (however it doesn't seem to implement things like polymorphism, late binding and inheritance so I don't quite see what's so OOP about it. It seems more like programming with structures in C.)
I don't know if LVOOP is buggy or not. I think early on it was buggy and things have improved in recent versions. I have read that it doesn't have all the features that you would have in OOP like C. I wouldn't recommend it only because I'm not familiar with it at all. I can't recommend something that I'm not comfortable with. If you go that route, plan on spending time in these forums and in LAVA to reading up on what others have done. I haven't hard of dqGOOP.
But back to your suggestion. I still have a couple of questions:
- How do you return values from the module? Would you use a queue for that as well?
- Where would the parameter queue be held (created and passed to the VI)
I would store all of these in a functional global variable. This is the VI that stores data in shift registers. Ben's action engine nugget is an advancement on that. This allows for both the calling VI and the parallel running subVI to get and set the data as needed. It runs quickly so neither process should be forced to wait while the other VI is doing its thing.
- My VI has to be constantly sampling and this shouldn't be interrupted too long by other functions as adding a listener. However both functionalities have to access the same kind of data. Is there an easy way to parallelize this? Would the sampling be a case in the case diagram that's always used if no command was sent to the VI or would it somehow run parallely? Yes. There are a couple of ways of doing this. One would be for the dequeue to have a timeout function. In the event the dequeue times out, you run the code that is doing the acquisition. I think a better method is that the code that does the acquisition enqueues its own command again to the end of the queue. Let's say that is command A. So when case A finishes, it enqueues A, which seeds itself to run again. So if nothing else comes into the queue, it just executes A , A, A, A. But let's say another section of code needs to do something such as command B. It will slip B into the queue while A is executing. So you would A, B, then A again, because A would get slipped back into the queue when the first A finishes, but B has already been put in while the first A was running.
- Would it be possible to make the VI reentrant and in this way use it simultaneously on different COM ports (using different parameter queues as well)? I'm not sure if I will need this but it would be neat if it could work.
I think you could do this. It may be a case where the VI is saved as a template (.vit) and you initiate it multiple times. I haven't needed to do this before, so I'm afraid I can't provide any details or useful tips.
Well, I will fool around some more. Thanks so much for your help. This is kind of exciting since the concepts are quite new for me. Btw, is there something like an academic theory (computer science) for LabVIEW? I came across functional languages in university but data flow languages are still a new concept for me.
Tobias
tfritz wrote:
Another question about the "dynamically starting" of the VI:
How is the path handled? Is it guaranteed that it always takes the VI from the project or does it just search for the first VI by that name it finds in the file structure? Does this still work when building an .exe from the project? What happens if the VI is already running? Can you test for this?
While I'm at it: is there a way to stop LabVIEW from searching for subVIs it can't find when openin a VI? This resulted in very unexpected behaviour sometimes where it would find the VI somewhere else (with the same name but maybe an older version).
In my case, I just had the path hardcoded. It is my only instance, I'm not planning on moving the VI's. If you don't have the path, it will take a VI by that name if it's in memory. If it isn't in memory, it starts searching relative to the calling VI's path. One thing I know, if you are dealing with relative paths, a subVI has a different relative path in an .exe as opposed to the development environment. The name of the .exe becomes a folder. So in development, if your sub VI is mySubVI.vi. In an executable, its path is MyExe.exe\MySubVI.vi
For all of this, I recommend searching the forums to get more details.
If it is searching for a VI, you can hit ignore. But of course you'd have to do it before it finds it. When you are dealing with versioning issues, I recommend making a backup copy of the entire directory structure elsewhere. Some location where it shouldn't stumble across it.

SIMPLE Database Design Problem !

Mapping is a big problem for many complex applications.
So what happens if we put all the tables into one table called ENTITY?
I have more than 300 attributeTypes.And there will be lots of null values in the records of that single table as every entityType uses the same table.
Other than wasting space if I put a clustered index on my entityType coloumn in that table.What kind of performance penalties to I get?
Definition of the table
ENTITY
EntityID > uniqueidentifier
EntityType > Tells the entityTypeName
Name >
LastName >
CompanyName > 300 attributeTypes
OppurtunityPeriod >
PS:There is also another table called RELATION that points the relations between entities.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
check the coloumn with WHERE _entityType='PERSON'
as there is is clustered index on entityType...there
is NO performance decrease.
there is also a clustered index on RELATION table on
relationType
when we say WHERE _entityType ='PERSON' or
WHERE relationType='CONTACTMECHANISM'.
it scans the clustered index first.it acts like a
table as it is physically ordered.I was thinking in terms of using several conditions in the same select, such as
WHERE _entityType ='PERSON'
AND LastName LIKE 'A%' In your case you have to use at least two indices, and since your clustered index comes first ...
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
Have you ever thought of using constraints in your
modell? How would you realize those?
...in fact we did.We have arranged the generic object
model in an object database.The knowledge information
is held in the object database.So your relational database is used only as a "simple" storage, everything has go through your object database.
But the data schema is held in the RDBMS with code
generation that creates a schema to hold data.If you think that this approach makes sense, why not.
But in able to have a efficent mapping and a good
performance we have thought about building only one
table.The problem is we know we are losing some space
but the thing is harddisk is much cheaper than RAM
and CPU.So our trade off concerated on the storage
cost.But I still wonder if there is a point that I
have missed in terms performance?Just test your approach by using sufficiently data - only you know how many records you have to store in your modell.
PS: it is not wise effective using generic object
models also in object databases as CPU cost is a lot
when u are holding the data.I don't know if I'd have taken your approach - using two database systems to hold data and business logic.
PS2: RDBMS is a value based system where object
databases are identity based.we are trying to be in
the gray area of both worlds.Like I wrote: if your approach works and scales to the required size, why not? I would assume that you did a load test with your approach.
What I would question though is that your discussing a "SIMPLE Database Design" problem. I don't see anything simple in your approach when it comes to implementation.
C.

How to fix comments design problem

I have some comments that are showing on the last page and not with the correct student in crystal reports. Its a design problem because when testing it prompts me for the personid of the student i type it in and correct information is displayed for that student but in the wrong spot.
How can i get the comments which is in a different section for the rest display on a second page but still with the correct person (im pushing it to the second page so i can duplex print)?
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Edited by: jeffman2 on Dec 1, 2011 4:38 PM
Edited by: jeffman2 on Dec 1, 2011 4:43 PM

Basic interface like textboxes and subreports is in crystal reports for visual studio 2010 also. I have installed the latest service packs though for the visual studio add-on. If you like I can list anything else you would need but im trying to solve my problem in the least amount of time and would be grateful for your help. What version in used in visual studio 2010 add-on?
Also, i would like to avoid costly phone calls.
Edited by: jeffman2 on Dec 14, 2011 7:35 PM
Edited by: jeffman2 on Dec 14, 2011 7:38 PM
Edited by: jeffman2 on Dec 14, 2011 7:38 PM

Why has the new ipod nano no connector for a speaker dock? The white blank at the bottom looks as if one was intended, but then there were design problems?

Why has the new ipod nano no connector for a speaker dock? The white blank at the bottom looks as if one was intended, but then there were design problems?

IKR! But u an order a connector that can plug nto any old speakers and then connect to your charger port and it will play music!

My iphone4 have leakage current phenomenon,design problems?

When my iphone4 charging with the data cable
It often electric shock me
Not always so
Especially the headphone jack、mute switch and metal antenna
why？
The design problem?
How to solve?

When using the supplied Apple charger do you have any problem? The apple supplied charger has a very low leakage current of about 30uA when connected to the phone.
If you connect your phone to a PC or Mac and you get a shock this indicates the leakage current of the connected device must be high, it does not indicate a fault with the iPhone!
Sometimes the design of a power supply means you may feel a shock for a moment when contacting the metal parts, but this is more like a static discharge effect as the power supplies internal capacitances discharge. If the tingle sensation continues you may have a higher than normal leakage current form the mains power supply.
Given you mention you have a notebook (PC non Apple I assume) then maybe your power supply is not as good as it should be. Try to measure the current between the metal chassis of the power supply and earth using a amp meter (multimeter set on mA). For a class II double insulated power supply there should be less than 250uA (0.25mA). For an earthed, class I, power supply it should be less than 3.5mA.
If it is an earthed power supply and you get a shock then either the earth to the power supply has broken or your mains outlet (or entire dewling) may have no earth! If so call in a professional electrcian ASAP!

Thermal design problems for MacBook Air Rev. A.

I am having a serious problem to watch streaming movies with first generation of Macbook Air. From the web sites, I leaened that this is due to "thermal design problems" and found that instration of "xnu-speedstep-air: https://github.com/reid/xnu-speedstep-air/blob/master/README.md" would solve this problem. I have tried to install this extension without success as I am not a computer expert. I appreciate it if somebody explain in detail how to install this. Thanks for your help.

First of all, check this:
http://support.apple.com/downloads/MacBook_Air_EFI_Firmware_Update_1_0
http://support.apple.com/downloads/MacBook_Air_SMC_Firmware_Update_1_2
If these updates don't help then download this app, it allows you to throttle the macbook's fans up so it runs cooler
http://links.visibli.com/4b93fc22658d1fa7/?web=cc555a&dst=http%3A//feedproxy.goo gle.com/%7Er/SoyDeMac/%7E3/1KAZTfyEZS4/story01.htm
I think you'll find this app simpler than the one you are trying to install.
Hope it helps!

Oracle Designer Problem Please help me

Sir,
1) I created a database
2) Run>cd d:\Oracle_home\repadm61\admin\@ckqa
@ckparams.txt
@ ckvalqa
@ ckcreate
3)Opened Repository Administration Utility
Log in as 'repos_manager/repos_manager@orcltest'
Installed Repository.
4) Opened Oracle 9i Designer. I am able to connect
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Please help me.
regards
Mathew

duplicate thread, see this one -> Re: Oracle Designer Problem Please help me

I'm using ver 4.0.1.: every search yields only 4 rows (2 pages) of images. Is this a settings or design problem?

I'm using version 4.0.1.: every search yields only 4 rows (2 pages) of images. Is this a settings or design problem? Its not a computer problem, as I get many screens of image rows when I use Internet Explorer.

You may want to ask this in the Dreamweaver Extensions forum or the Extension Developer's own support forum. You will likely get faster answers there.
Brad Lawryk
Adobe Community Professional: Dreamweaver
Northern British Columbia Adobe Usergroup: Manager
Thompson Rivers University: Dreamweaver Instructor
My Adobe Blog: http://blog.lawryk.com

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