ISO: person or forum for data modeling guidance

hello -
Is there anyone here who is willing/able to advise me on the data model that my husband and I have been working on? Alternatively, can anyone suggest an alternative forum, or where I need to go to have this done professionally?
Our background is that we're both self-taught; he has a functioning database (in Approach) that we want to re-build and expand upon. I have a set of related tables in Filemaker that are semi-functional.
We're not sure if his original model is the most stable way to have built it, nor are we sure that we're expanding in the right way to encompass my tables....
I really do NOT want to pay someone to write this whole application for us - beyond the expense, we like/want to be in control.
Thank you -
Marion in Rochester

Marion
My e-mail address is in my profile, drop me a line and I'll be happy to have a look.
A few things first though. Download and install Oracle XE if you have not done so already. Let me know what SQL knowledge you have specifically Oracle DDL (Data Definition Language - Using for creating and altering database objects) and DML (Data Manipulation Language - Used for inserting, updating and deleting rows from a table).
Next send me the data model by way of what tables (and their columns), primary keys, foreign keys, constraints, indexes (if any yet) that you currently have. I will also need to know roughly how many rows you currently have in each table. Send this in any format you want (even just a text file) but not as a database.
Cheers
Ben

Similar Messages

Using CVS in SQL Developer for Data Modeler changes.

Hi,
I am fairly new to SQL Developer Data Modeler and associated version control mechanisms.
I am prototyping the storage of database designs and version control for the same, using the Data Modeler within SQL Developer. I have SQL Developer version 3.1.07.42 and I have also installed the CVS extension.
I can connect to our CVS server through sspi protocol and external CVS executable and am able to check out modules.
Below is the scenario where I am facing some issue:
I open the design from the checked out module and make changes and save it. In the File navigator, I look for the files that have been modified or added newly.
This behaves rather inconsistently in the sense that even after clicking on refresh button, sometimes it does not get refreshed. Next I try to look for the changes in Pending Changes(CVS) window. According to the other posts, I am supposed to look at the View - Data Modeler - Pending Changes window for data modeler changes but that shows up empty always( I am not sure if it is only tied to Subversion). But I do see the modified files/ files to be added to CVS under Versioning - CVS - Pending Changes window. The issue is that when I click on the refresh button in the window, all the files just vanish and all the counts show 0. Strangely if I go to Tools - Preferences - Versioning - CVS and just click OK, the pending changes window gets populated again( the counts are inconsistent at times).
I believe this issue is fixed and should work correctly in 3.1.07.42 but it does not seem to be case.
Also, I m not sure if I can use this CVS functionality available in SQL Dev for data modeler or should I be using an external client such as Wincvs for check in/ check out.
Please help.
Thanks

Hi Joop,
I think you will find that in Data Modeler's Physical Model tree the same icons are used for temporary Tables and Materialized Views as in SQL Developer.
David

Sharepoint 2013 Reporting Services & OLAP Cubes for Data Modeling.

I've been using PowerPivot & PowerView in Excel 2013 Pro for some time now so am now eager to get set up with Sharepoint 2013 Reporting Services.
Before set up Reporting Services I have just one question to resolve.
What are the benefits/differences of using a normal flat table set up, compared to an OLAP cube?
Should I base my Data Model on an OLAP Cube or just Connect to tables in my SQL 2012 database?
I realize that OLAP Cubes aggregate data making it faster to return results, but am unclear if this is needed with Data Modeling for Sharepoint 2013.
Many thanks,
Mike

So yes, PV is an in-memory cube. When data is loaded from the data source, it's cached in memory, and stored (compressed) in the Excel file. (also, same concept for SSAS Tabular mode... loads from source, cached in mem, but also stored (compressed) in data
files, in the event that the server reboots, or something similar).
As far as performance, tabular uses memory, but has a shorter load process (no ETL, no cube processing)... OLAP/MDX uses less memory, by requiring ETL and cube processing... technically tabular uses column compression, so the memory consumption will be based
on the type of data (numeric data is GREAT, text not as much)... but the decision to use OLAP (MDX)/TAB (DAX) is just dependent on the type of load and your needs... both platforms CAN do realtime queries (ROLAP in multidimensional, or DirectQuery for tabular),
or can use their processed/in-memory cache (MOLAP in multidimensional, xVelocity for tabular) to process queries.
if you have a cube, there's no need to reinvent the wheel (especially since there's no way to convert/import the BIDS/SSDT project from MDX to DAX). If you have SSAS 2012 SP1 CU4 or later, you can connect PV (from Excel OR from within SP) directly to the
MDX cube.
Generally, the benefit of PP is for the power users who can build models quickly and easily (without needing to talk to the BI dept)... SharePoint lets those people share the reports with a team... if it's worthy of including in an enterprise warehouse,
it gets handed off to the BI folks who vet the process and calculations... but by that time, the business has received value from the self-service (Excel) and team (SharePoint) analytics... and the BI team has less effort since the PP model includes data sources
and calculations - aside from verifying the sources and calculations, BI can just port the effort into the existing enterprise ETL / warehouse / cubes / reports... shorter dev cycle.
I'll be speaking on this very topic (done so several times already) this weekend in Chicago at SharePoint Saturday!
http://www.spschicagosuburbs.com/Pages/Sessions.aspx
Scott Brickey
MCTS, MCPD, MCITP
www.sbrickey.com
Strategic Data Systems - for all your SharePoint needs

Will there be generators for Data Modeler

Are there plans to add any generators to SQL Data Modeler? This would be similar to what we had in Oracle Designer. One of the nicest things with Oracle Designer was that we could interview the End Users, build the ERDs and FHDs based on the interviews, push them down to tables and modules and menus, then generate those with Forms and Reports and then show the End User the prototype. This would provide the feedback if we were in the right track or not very early on in the design process. Since we had the data model transformers, we could modify the logical model and then re-push the changes.
With DM 3.0 and all that it provides on the modeling side, will some form generators for a user interface be provided?
Thanks in advance,
Scott

That last statement, question should read:
With DM 3.0 and all that it provides on the modeling side, will some form of generators for a user interface be provided?
Edited by: ScottK on Feb 23, 2011 10:23 AM

Best approach for Data Modelling.

Hello Experts
I am building a Customer Scorecard involving SD and Marketing in BI 7.0.
There are a couple of existing DSOs, some pushing the data into InfoCubes and some don't. All the reporting is happening from MultiProvider sitting on top of these Data Targets.
The team has a primitive design which says that I additional DSOs be created to extract data from the above mentioned couple of DSOs based on only the Objects that are needed for Customer Scorecard reporting.
This means, I am creating a couple of DSOs as per the current design which is in place.
Upon suggesting to only create a Customer Scorecard MultiProvider on top of the already existing couple of Data Targets (avoiding to recreate addtional DSOs and the hassles of loading and activating them and then loading the data into InfoCubes) and then create the BEx Queries on top of them, the Lead expressed his concerns about the impacts it could have on the existing Data Model and subsequent transports once the Model is complete..!
What is the best practice to handle a situation like this? I see there are 3 ways to go ahead with this:
1. Do as the Lead said, which means creating additional DSOs (extracting data from a couple of required existing DSOs, push this data into 1 InfoCube and then create a MultiProvider on top of this (be aware that there is another similar data model that I need to create which will also be embedded into this MultiProvider) and create BEx Reports from there.
2. Create only the InfoCubes which will extract data from the already existing DSOs (avoid creation of additional DSOs) and then create a MP from where BEx Reports are created.
3. Only create a MultiProvider on all the required and already existing DSOs and InfoCubes, making sure if reporting needs aggregated data for reporting or not and then create BEx Reports from there (avoid creation of additional DSOs, & ICs).
Note: We use Rev-Track to do the Transports.
Which one do you think would be the best way to go and what could be the implications? Eventually, the reporting is done in WAD.
Thanks for your time in advance.
Cheers,
Chandu

Hi,
Case 1 and 2 have similarities. But its purely depend user needs.
I think you may be know the difference between dso and cube.
DSO - holds detailed level data
Cube - holds aggregated data.
As per you needs use any one target only, no need to use DSO---> cube flow for existing flows.
you can decide which you want use DSO or Cube only.
Case 3. if your requirement will suffice with existing dso and at reporting level if you can manage to get the required out put then you can with it. But as my guess with existing target your requirement may won't suffice your needs.
About transports:
You can create one Rev track and assign multiple transports to it.
you can add and release transport one by one rather than all at a time.
if you release all at a time you may get some inconsistency issue and TR won't be released.
Thanks

Searching for Data Modell

Hello,
I need some further information about the data modell of SBO. An ERD would be great, but as far as I know there is no such diagram available.
Searching in this forum gave me the information that that there are two useful files:
- SBOObjectsTables 6.5.chm
- DB_Help.chm
I don´t have access to the marketplace, that´s why it would be great if someone could mail one of these files to me to [email protected]
Thanks!

Done

Forum for Data Services, RapidMarts, Data Quality

SAP BO Moderators,
Could you educate me if there is any forum for BO Data Services, Rapid Marts and Data Quality.
If not, could you tell when will this forum going to start?
Thank you.
- Anil

Anil
you can post your questions at the below forum for Enterprise Information Management
Data Services and Data Quality
regards,
Shiva

Just wondering, what kinda tools do you prefer for data modeling

Reading alot about datamodeling, from E-R diagrams to UML. In your database designs. From the conceptual, logical and physical model. What tool you prefer the most and why. What is a good tool for such things. And does Oracle supply such tools. Just curious as to what the professionals use.
Pete

ER-WIN is your tool for Database physical / Logical data modeling.

Tools for data modeling

Hi,
Can any one tell me if there are any specific tools used for logical data modeling in SAP BW data modeling . I have used Erwin as a data modeling tool for implentation of data ware house, I would like to know if there are any specific tools for SAP BW implementations.
Response appreciated
tanu

Another related discussion: Looking for EDW modelling tool recommendations for BW

SDO_PC, multiple SRIDs - best practise for data model?

Hi,
im using UTM and I am getting data covering two zones.
all my existing data is from zone A.
tables:
pointcloud
pointcloud_blk
now im getting data with very few points from zone A and most points from zone B. It was agreed that the data delivery will be in SRID for zone B.
so I tested whether this would work. I had two pointclouds. One with SRID A, another with SRID B. As soon as I put SRID B pointcloud inside, I could NO LONGER QUERY pointcloud with SRID A.
So it seems to be necessary to use at least another pointcloud_blk, f.e. pointcloud_blk_[srid].
Question: does another pointcloud_blk for each SRID suffice or do i also need a pointcloud table per SRID. the pointcloud table seems only interesting due to its EXTENT column. But on the other hand this could be queried by "function", since there are only 10 or so records (pointclouds) inside.
PLZ share your best practises. What does work, what not.

It is necessary to have one pointcloud_blk table for each SRID since there is a spatial index on that table.
As for the PointCloud table itself, it is up to you. You can have pointclouds with different SRIDs in that table.
But if you want to create spatial index on it, you have to use some function based index so that the index
sees one SRID for the table.
Since this table usually does not have many rows, this should work fine with one table for different SRIDs.
siva

Data modeler

Hi,
I am not pretty sure whether it is the right place to post this question. I am working as Sr. Oracle DBA and thinking of learning and switching my profession to Data modeler.
But I wanted to know like as per hierarchy wise is data modeler position in one step up to oracle DBA?
Also can anyone suggest me any forum for data modeler?
Thank you in advance.

user2995637 wrote:
You are perfectly right. I am completely with you. But in every field there is graph of levels, No necessarily, and certainly not necessarily so narrowly defined.
even organization has hierarchies. And International Frambo Corp may say a Data Modeler is "higher" than a DBA, while United Widget Corp may say just the opposite. And Dunder-Mifflin Paper may not even have a job title "Data Modeler" even though they have an entire team of people performing that function. And two companies probably even define the individual jobs differently. And even if a company has the two job titles, defined as you perceive they should be defined, they may very well have them at equal 'levels'. So anything I might say about how those job titles relate in my organization probably mean zero in your organization.
Job titles mean only and exactly what the individual organization says they mean.
You should be pursuing the work you find enjoyable and fulfilling. Not some artificial title based on an artificial concept of what is "higher". Have you actually done any data modeling? Do you find it interesting? Why would you want to pursue that type of assignment vs. what you are currently doing?
So just thought of gather info on that as well.

How to install Data Modeler

Hi,
I downloaded Sqldeveloper data Modeler for Windows 32 bit including JRE. The data modeler has to run on windows 7 64 Bit as well as the sql developer runs
After unzipping this file I tried to start the datamodeler. When I starter the 32 Bit version I got the error:
Cannot be startet becaus MSVCR71.dll is not on the computer.
When I tried to start the 64 Bit version I got the error
Unable to launch the Java Virtual Machine located at path ..\..\jdk\jre\bin\client\jvm.dll
What must I do to install the datamodeler?
Please help me.
Regards
Siegwin

Hi Siegwin,
The download including JRE only includes a 32 bit JRE.
This jre includes a copy of file msvcr71.dll (in folder datamodeler\jdk\jre\bin). However it seems that in some circumstances the system does not find this file.
There have been several message threads about this, both for SQL Developer and for Data Modeler.
For example, from https://forums.oracle.com/forums/thread.jspa?messageID=10624958 it appears that copying msvcr71.dll to the Windows\System32 folder may solve the problem,
or starting Data Modeler using the datamodeler.exe file in folder datamodeler/datamodeler/bin may help. (This brings up an additional command prompt window.)
Message Re: Oracle Data Modeler Installation guide may also be relevant.
To run Data Modeler in 64 bit mode, you will need to provide your own 64 bit JRE.
If you edit the file datamodeler64.conf (in folder datamodeler\datamodeler\bin) and remove the line starting with "Set JavaHome", next time you attempt to start 64-bit Data Modeler it should ask you for the location of the java.exe file in your 64 bit JRE.
There is now a forum specifically for Data Modeler issues: SQL Developer Data Modeler
David

AllFusion Erwin Data Modeler Connection to SAP NW2004s Systems

We would like to use a data modeling product that we purchased for many of our SAP NW systems. We understand that there may be some restrictions on DB direct user connections and would like to confirm the following from those that may have exposure in this area:
1. If we connection the DM product to SAP, are there any restrictions on the data that is read from the SAP DB?
2. Are we violating any SAP license agreement by using the third party tool for data modeling on our SAP NW systems (since it will require a DB connection)?
3. Any other helpful information?
Any guidance would be very much appreciated.
Thanks and best regards,
Chris

Hi Chris,
How does your DM product plan on "connecting" to the SAP applications? Most of the time, SAP applications provide Remote Function Calls (RFC) (i.e. in the programming world, methods) for programmers to call in order to push or pull data to itself. There are no restrictions here aside from the normal authorizations given to access data on the application. Although SAP discourages any direct manipulations directly to the database layer.
Regards,
John Ta

Data Modeler Incremental Database Changes

We need the tool to determine the differences between the database and the model, so that it generates DDL only for the changes without us having to tell the tool at DDL creation time which are the new tables, columns, indexes, etc. Is this feature available already or would this be a new feature?

Hi,
Yes, this feature is already available.
If the model was initially imported from the database, you can use Synchronize Data Dictionary with Model (either for individual objects, or for the whole model using the right-pointing arrow above the diagram).
This displays the Compare Models dialog identifying the differences. You can use its DDL Preview button to generate DDL to update the database.
There's a short video demonstrating this at http://apex.oracle.com/pls/apex/f?p=44785:24:689545084496101::NO:24:P24_CONTENT_ID,P24_PREV_PAGE:5951,2
If the model was not imported from the database, you can do the following:
Open your model (including the relevant Physical Model).
Use Import/Data Dictionary to start the Data Dictionary Import Wizard. In step 2, select the "Swap Target Model" tick box. And select the relevant objects to import from the database.
After the import phase, this will display the Compare Models dialog as in the previous case.
There is now a forum specifically for Data Modeler topics: SQL Developer Data Modeler
David

Publish data model with designer

Hi,
so far I used ERwin for data modelling. ERwin can generate HTML output consisting of the graphical data model plus hyperlinks on the tables. If you click on a table a report pops up with all details, e.g. table and column comments.
I find this very useful to publish the data model.
Is there something similar available with Oracle Designer?
I found this announcement, but no product: http://otn.oracle.com/products/designer/pdf/ROB_Announce.pdf
Best Regards,
Jens

If you have any recent release of Designer installed, then you have the ROB automatically installed. Select your Start menu in Windows and then navigate through your menus to the Designer sub menu and you'll see a link for setting up the ROB.
The ROB was made available as part of Designer from March 2003. The lastest release of Designer, viz Designer 10g (9.0.4.4) and the equivalent 9i and 6i releases, all now avialable on OTN, have additional support for the ROB. This offers the ability to save and ERD or Server Model Diagram directly to the ROB.
You do need to add the "hotpost" functionality manually. The ROB help gives a step by step apporach on adding these hotspots. There are a number of demos on the Designer demo page on using the ROB and configuring the App Server to use it. http://otn.oracle.com/products/designer/demos.htm
Regards
Sue

ISO: person or forum for data modeling guidance

Similar Messages

Maybe you are looking for