Need help with Data Model for Private Messaging

Sad to say, but it looks like I just really screwed up the design of my Private Messaging (PM) module... *sigh*
What looked good on paper doesn't seem to be practical in application.
I am hoping some of you Oracle gurus can help me come up with a better design!!
Here is my current design...
member -||-----0<- private_msg_recipient ->0------||- private_msg
MEMBER table
- id
- email
- username
- first_name
PRIVATE_MSG_RECIPIENT table
- id
- member_id_to
- message_id
- flag
- created_on
- updated_on
- read_on
- deleted_on
- purged_on
PRIVATE_MSG table
- id
- member_id_from
- subject
- body
- flag
- sent_on
- updated_on
- sender_deleted_on
- sender_purged_on
***Short explanation of how the application currently works...
- Sender creates a PM and sends it to a Recipient.
- The PM appears in the Sender's "Sent" folder in my website
- The PM also appears in the Recipient's "Incoming" folder.
- If the Recipient deletes the PM, I set "deleted_on" and my code moves the PM from Recipient's "Inbox" to the "Trash" folder. (Record doesn't actually move!)
- If the Recipient "permanently deletes" the PM from his/her "Trash", I set "purged_on" and my code removes the PM from the Recipient's Message Center. (Record still in database!)
- If the Sender deletes the PM, I set "sender_deleted_on" and my code moves the PM from the Sender's "Sent" folder to the "Trash" folder. (Record doesn't actually move!)
- If the Recipient "permanently deletes" the PM from his/her "Trash", I set "sender_purged_on" and my code removes the PM from the Sender's Message Center. (Record still in database!)
Here are my problems...
1.) I can't store PM's forever.
2.) Because of my design, the Sender really owns the PM, and if I add code to REMOVE the PM from the database once it has a "sender_purged_on" value, then that would in essence remove the PM from the Recipient's Inbox as well!!
In order to remove a PM from the database, I would have to make sure that *both* the Recipient has "purged_on" value and the Sender has a "sender_purged_on" value. (Lot's of Application Logic for something which should be simple?!)
I am wondering if I need to change my Data Model to something that allows my autonomy when it comes to the Sender and/or the Recipient deleting the PM for good...
One the other hand, I believe I did a good job or normalizing the data. And my current Data Model is the most efficient when it comes to saving storage space and not having dups.
Maybe I do indeed just need need to write application logic - or a cron job - which checks to make sure that *both* the Sender an Recipient have deleted the PM before it actually flushes it out of my database to free up space?!
Of course, if one party sits on their PM's forever, then I can never clear things out of my database to free up space...
What should I do??
Some expert advice would be welcome!!
Sincerely,
Debbie

rp0428,
I think I am starting to see my evil ways and where I went wrong...
> Unfortunately his design is just as denormalized as yours
I see that now. My bad!!
> the last two columns have NOTHING to do with the message itself so do NOT belong in a normalized table.
> And his design:
>
> Same comment - those last two columns also have NOTHING to do with the message itself.
Right.
> The message table should just have columns directly related to the message. It is a list of unique messages: no more, no less.
Right.
> Mark gave you hints to the proper normalized design using an INTERSECT table.
> that table might list: sender, recipient, sender_delete_flag, recipient_delete_flag.
> As mark suggested you could also have one or two DATEs related to when the delete flags were set. I would just make the columns DATE fields.
>
> Once both date columns have a value you can delete the message (or delete all messages older than 30+ days).
>
> When both flags are set you can delete the message itself that references the sender and the message sent.
Okay, how does this revised design look...
MEMBER --||-----0<-- PM_DISTRIBUTION -->0-------||-- PRIVATE_MSG
MEMBER table
- id
- email
- username
- first_name
and so on...
PM_DISTRIBUTION table (Maybe you can think of a better name??)
- id
- private_msg_id
- sender_id
- recipient_id
- sender_flag
- sender_deleted_on
- sender_purged_on
- recipient_flag
- recipient_read_on
- recipient_deleted_on
- recipient_purged_on
PRIVATE_MSG
- id
- subject
- body
- sent_on
Is that what you were describing to me?
Quickly reflecting on this new design...
1.) It should now be in 3rd Normal Form, right?
2.) It should allow the Sender and Recipient to freely and independently "delete" or "purge" a PM with no impact on the other party, right?
Here are a few Potential Issues that I see, though...
a.) What is to stop there from being TWO SENDERS of a PM?
In retrospect, that is why I originally stuck "member_id_from" in the PRIVATE_MSG table!! The logic being, that a PM only ever has *one* Sender.
I guess I would have to add either Application Logic, or Database Logic, or both to ensure that a given PM never has more than one Sender, right?
b.) If the design above is what you were hinting at, and if it is thus "correct", then is there any conflict with my Business Rule: "Any given User shall only be allowed 100 Messages between his/her Incoming, Sent and Trash folders."
Because the Sender is no longer "tightly bound" to the PRIVATE_MSG, in my scenario above...
Debbie could send 100 PM's, hit her quota, then turn around and delete and purge all 100 Sent PM's and that should in no way impact the 100 PM's sitting in other Users' Inboxes, right??
I think this works like I want...
Sincerely,
Debbie

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{code}
import java.io.*;
import java.util.*;
import java.text.*;
public class Project {
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     private static String num2 = null;
     private static String choice1 = null;
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                                        System.out.println("");
                                        inputNumber2();
                                        System.out.println("");
                                        Calculator();
                                        System.out.println("");
                                        anotherCalculation();
                                        System.out.println("");
                                        inputCorrect = true;
                              } else {
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                                   System.out.println("the program will now exit, Goodbye.");
                                   System.exit(0);
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                              System.out.println("You did not enter a valid answer: " + "\""+ more + "\" is not in the list!!");
                              inputCorrect = false;
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     public static void main(String[] args) throws IOException {
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          System.out.println("");
          p1.inputNumber2();
          System.out.println("");
          p1.Calculator();
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               p1.anotherCalculation();
               System.out.println("");
{code}
*Can you please run my code for yourself and have a look at how this program is constructed*
*and give me ANY feedback on how I can better this code(program) or if I've done anything wrong from your point of view.*
Your help will be much appreciated.
Thanks in advance

Smirre wrote:
Now my question is this: How can I restrict the user to only enter 'letters' (and spaces of course) but allow NO numbers for his/her surname??You cannot restrict the user. It is a sad fact in programming that the worst bug always sits in front of the Computer.
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I then modified the Schedule for the REPORTS source Crawler Policy to “Process All Documents”.
Schedule crawls and indexes entire REPORTS table.
In SES Advanced Search page, I enter my search keyword, select Specific Source Group as REPORTS, select All Match, and used the pick list to select the DATE OCCURRED (DD-MON-YY) Attribute Name, operator of Greater than equal, and entered the Value 01-JAN-07. Then the second attribute name of DATE_OCCURRED (DD-MON-YY), less than equals, 10-JAN-07.
Search results gave me 38,000 documents, and the first 25 I looked at had dates NOT within the 01-JAN-07 / 10-JAN-07 range. (e.g. OBSDATE= 10-MAR-07, 22-SEP-07, 02-FEB-08, etc.)
And, none of the results I opened had ANY dates within the SUMMARY CLOB…in case that’s what was being found in the search.
Can someone help me figure out how to allow my client to search for specific dated records in a db table using a single column for the date? This is a major requirement and they are anxiously awaiting my solution.
Thanks very much, in advance….

raford,
Thanks very much for your reply. However, from what I've read in the SES Admin Document is that (I think) the date format DD/MM/YYYY pertains only to searches on "file system" sources (e.g. Word, Excel, Powerpoint, PDF, etc.). We have 3 file system sources among our 25 total sources. The remaining 22 sources are all TABLE or DATABASE sources. The DBA here has done a great job getting the data standardized using the typical/default Oracle DATE type format in our TABLE sources (DD-MON-YY). Our tables have anywhere from 1500 rows to 2 million rows.
I tested your theory that the dates we are entering are being changed to Strings behind the scenes and on the Advanced Page, searched for results using OBSDATE equals 01/02/2007 in an attempt to find data that I know for certain to be in the mapped OBSDATE table column as 01-FEB-07. My result set contained data that had an OBSDATE of 03-MAR-07 and none containing 01-FEB-07.
Here is the big issue...in order for my client to fulfill his primary mission, one of the top 5 requirements is that he/she be able to find specific table rows that are contain a specific date or range of dates.
thanks very much!

Need performance! - Need help with Server Architecture for SSAS on Azure VM

I would like to build 100% Azure VM base solution. We can install as many as needed.
I have large amount data in DW. (100GB-1000GB)
I would like to provide PowerView reports in SharePoints.
I would like to have report data be as real time as possible. (Min data is updated once in 2 hours)
These are requirements:
-SharePoint 2013
-PowerView
-SSAS OLAP Cube
-SQL Server DW&Staging DB (Currently DW&Staging on same server)
I need help specially what can be done with SSAS to meet requirements? Should be installed to own application server? Possible to install multiple SSAS? SSRS needs own server?
I appreciate also links to server topology diagrams.
Kenny_I

I assume you mean 100GB-1000GB (not 1000TB) right?
For Sharepoint I would refer to the sizing guide for diagrams and sizing:
http://technet.microsoft.com/en-us/library/ff758647(v=office.15).aspx
SSRS (and Power View) will run in the SharePoint farm on a SharePoint app server potentially with other SharePoint services.
I would definitely put SSAS on a dedicated server for a cube that size. Depending on how well your data compresses, there may not be a VM in Azure with enough RAM to put your model into a Tabular SSAS model. I would prototype it with a subset of data to see
how well it compresses. You can always use a Multidimensional model as a fallback.
Depending on how much processing the SSAS model impacts user queries (since it is happening during the day) you could build an SSAS processing server and a separate SSAS query server and run the XMLA Synchronize command to copy the cube incrementally from processing
to query servers.
Does that help?
http://artisconsulting.com/Blogs/GregGalloway

Need Help with mysql admin for Mac

Hello all.
I am new to cold fusion and databases all together. Infact I
am doing an online tutorial to get me started, my problem is the
tutorial really just scratches the surface for the mac side and in
some cases sorta explains how to do but no visual help and I am
very visual.
I am searching for software that is really idiot proof to
start my knowledge with then make the transition when I learn more
and more to hard coding. The tutorial suggests Navicat for Mysql
admin and it is nice but he is setting up basic databases in Access
which looks really easy and I am trying to follow along with
navicat but I am just not getting it specifically when it comes to
setting up relationships between tables. Can I use a software like
FileMaker Pro and just convert to mysql or is their other software
that makes it a little more easy to understand how to set up
relationships like access does.
I am totally new to this stuff and I am looking for the
easiest product to use. Thanks again for your help and time.
Chris

As for the database part, before you write your first query,
you should become grounded in the concepts of data modeling. Then
find a good source (book, books-on-line, etc. ) for the particular
"flavor" of SQL used by your database of choice, then start writing
your queries. Data model first (entities, relationships,
attributes), then SQL.
Couple of fairly good online tutorials for data modeling.
Introduction
to Data Modeling and
Data Model
Reference
Master this and you will save yourself many hours of grief,
trust me.
Phil

Need help with Toshiba model 42TL515U TV FAN

I recently had an error message pop up on the tv that says the tv fan went out. The tv has worked perfectly since i purchased it untill now. I'm very unhappy about it since i have taken great care of it the entire time and it is not my fault but toshibas for selling me the tv with a faulty internal fan and OF COURSE it tells me fan went out after my warranty just ended. I need help, answers and customer support because this is rediculous...

If there truly is a fan in the TL515U you can easily open up the TV, look at the fan specs, and replace it.
I bet the fan used in it are the ones used in computers.

Need help with data grid...

I have setup a profile card which displays information about individuals by pulling data from an XML database.
I have multiple text fields and couple movie clips that display images but i need a datagrid to display stats for each individual.
The stat information is set as attributes on a array of XML nodes each node is a year.
Example XML
<hockey>
     <profile>
          <name>Wayne Gretzky</name>
          <image>pic1</image>
          <dob>Jan 26, 1961</dob>
          <position>Centre</position>
          <height>6'0"</height>
          <weight>185lbs</weight>
          <history>"important information"</history>
          <medal_record>
                    <medal standing ="Silver" Event =" 1981 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Gold" Event =" 1984 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Gold" Event =" 1987 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Gold" Event =" 1991 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Silver" Event =" 1996 World Cup of Hockey" sport="Ice Hockey"/>
          </medal_record>
     </profile>
     <profile>
          <name>Wayne Gretzky2</name>
          <image>pic2</image>
          <dob>Jan 26, 1962</dob>
          <position>Right Wing</position>
          <height>6'1"</height>
          <weight>205lbs</weight>
          <history>"important information"</history>
          <medal_record>
                    <medal standing ="Gold" Event =" 1981 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Bronze" Event =" 1984 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Silver" Event =" 1987 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Silver" Event =" 1991 Canada Cup" sport="Ice Hockey"/>
                    <medal standing ="Gold" Event =" 1996 World Cup of Hockey" sport="Ice Hockey"/>
          </medal_record>
     </profile>
</hockey>
The red information is what i need to get displayed by the Data Grid for each profile.
Standing
Event
Sport
Gold
1981 Canada Cup
Ice Hockey
Bronze
1984 Canada Cup
Ice Hockey
The swf has buttons to cycle through the profiles which loads the new information from the XML.
If you have a good understanding of how the dataGRIDs work please let me know if you can help as this is the last problem holding me from finishing this.
Thanks in advance.

Update... I got the data pulling in but it doesnt change as the profile changes with the rest of the data.

Need help with data filtering on groups/application roles

Hello,
I have a situation where I have to apply security on objects (reports, prompts etc) and dimension members (Essbase cube). So the idea is like this:
Report 1: access to three users (U1, U2, U3), but for dimension Company they have separate rights:
U1: Company A, Companies A.1-A.7 (children of A) and Companies A.1.1-A.1.9 (children of A.1);
U2: Company A.1 and Companies A.1.1-A.1.9;
U3: Company A.1.1
same for Report 2, but users must have access to different companyes, like Company B, B1...
In WebLogic Console I created three groups (G1-G3) and placed each user to a group (U1-> G1, U2 ->G2, U3->G3). Then in WebLogic EM I created three application roles (R1-R3) and added for each, corresponding user (R1-> U1, R2->U2, R3-> U3).
My approach was to use application roles like this:
R1: include User1 and filter data on repository by application role to each generation of the cube ("Data_Source_Name"."Dimension_Name"."Generation2,Dimension"='Company A',"Data_Source_Name"."Dimension_Name"."Generation3,Dimension"='Company A.1', "Data_Source_Name"."Dimension_Name"."Generation4,Dimension"='Company A.1.1')
R2: include User2 and filter data on repository by application role to each generation of the cube ("Data_Source_Name"."Dimension_Name"."Generation3,Dimension"='Company A.1', "Data_Source_Name"."Dimension_Name"."Generation4,Dimension"='Company A.1.1')
R3: include User3 and filter data on repository by application role to each generation of the cube ("Data_Source_Name"."Dimension_Name"."Generation4,Dimension"='Company A.1.1').
I've noticed that, by default, each role inherites BIConsumer and "localmachineusers" application roles, so I set in repository these both roles to filter data as the role 3 (the lowest level of acces), in order for my roles (Roles 1 to 3) to have the highest privileges.
In repository I cannot see any of my users (U1-U3), but just the application roles they are in.
For Report 1 I set the access to Roles 1-3 and when I am logged on as U3 this report should display only the data for Company A.1.1, but it doesn't (displays data also for Company A, Companies A.1-A.7).
In fact it seems, that the data isn't filtered at all, which drives me to the conclusion that my data filter is override by another role, maybe ?
Could you please give me a clue about what I am missing here ?
Thank you.

Amith,
Please bear this with me - see my comments below (search for petresion_Comments):
So, we have three users who have access to a report called Report1. But the data that they see in the report needs to be different. The report has a dimension company, and each user needs to see different companies data. So the filtering needs to be done on company dimension.
petresion_Comment: That's my case to solve.
Now the groups in weblogic has no purpose in OBIEE 11g unless you are using an LDAP authenticator who has groups defined in the active directory. By this I mean the network people are maintaining the users and group relation necessary for OBIEE. So keeping the weblogic groups apart for a minute, lets deal with users and roles only.
The three users are assigned to three different roles R1, R2 and R3. By default, all the roles inherit the BIconsumer role, and localmachineusers role you mentioned is not an OTB role. This is something that is probably causing the data filtering to fail. Do a test like create a user in weblogic, assign him only to the localmachineusers role, and go to analytics, and check your roles and groups by going under my account. Make sure this role is not inheriting any other roles like BIAdministrator, BIauthor etc. So in conclusion, when one of your users login, they should inherit only their custom Role (R1 for instance), BIConsumer, Authenticated User, and your custom role localmachineusers.
petresion_Comment: That is what I checked on the first time (few days ago) and is exactly as you say (BIConsumer, localmachinerole and Role1).
Do not apply any data filters on the BIConsumer role. This is not a good practice because the filters get applied to every single user that logs into the system.
petresion_Comment: I know that, but appliyng filters on BIConsumer role I tried to make sure that its privileges doesn't overrides any of my Roles (1,2 or 3). I will remove the filter on BIConsumer.
Now create the data filters on your custom roles (R1, R2, R3). Save the RPD. Deploy the Rpd through Enterprise Manager.
petresion_Comment: Only difference in my case is that I stopped BI services, applied changes to rpd in Offline mode and then restarted BI services.But also tried as you mentioned (by the book in fact) and same result. The problem is the same, my roles(1,2,3) don't filter the companies at all.
Once you are done with all the work above, you should login into analytics as user1. After logging in go to my account, roles and groups, and make sure you see the R1 in the list of groups. Now run the report, and your filters should get applied no matter what. If they are still not getting applied, grab the physical sql and see if the filters are existing in the where condition.
petresion_Comment: Where can I capture the physical SQL (probably an MDX sent to the Essbase cube ?) ?
One other reason could be, one of the roles that are assigned to the user1 by default, is overriding the filters. Like for example, if a user is assigned to BIAdmin role, and no matter if you assign him to a different role that has 100's of filters, he will still see all of the data.
petresion_Comment: As I said before, each of my users are members of their roles, BIComsumer and localmachinerole, so no other privileges (no BIAdmin role).
Thank you for the patience.
John

Need help with correction inscript for duplication on regular basis

Hi,
I am using Oracle 10.2.0.4 on Win 2008 R2. We have Archive mode enabled and no rman catalog is used. I have a requirement where i have to duplicate prod sevrer on regular basis to development server.
I have created few batch files so that the entire process in automated. Stored all the scripts in c:\script\clone\ directory.+
I have taken the backup copy of password and spfile from prod server and copied to the development server in same location.
These are the scripts i run in order:
*1_clone.bat*
set ORACLE_SID=orcl
sqlplus / as sysdba @c:\script\clone\2_test.bat
*2_test.bat*
shutdown immediate
startup nomount
host rman target sys/oracle@live nocatalog auxiliary / @c:\script\clone\3_rman.rcv
*3_rman.rcv*
run {
allocate auxiliary channel d1 type disk;
duplicate target database to ORCL NOFILENAMECHECK;
exit
When the duplication process in about to finish, i get below error:
contents of memory script:
shutdown clone;
startup clone nomount;
executing Memory Script
RMAN-03002: failure of duplicate DB command at 07/31/2012 08:02:21
RMAN-03015: error occured in stored script memory script
RMAN-06136: Oracle error from auxiliary database: ORA-01013: user requested cancel of current operation
Recovery Manager complete
SQL>
When i press exit, this window closes and i can run the alter database open resetlogs;+ command from a new sql prompt. I check online and some suggest there might be a window open with system user connected. Please suggest any changes in the script.
Best Regards,

Hello;
Having another session with system user will cause rman to throw this error. For example another session used to start up database in nomount mode still being active.
Duriing the cloning process the rman session needs to be exclusively connected to the auxiliary instance (no other session are allowed).
Duplicate post
request for help with rman cloning script
Best Regards
mseberg
Edited by: mseberg on Jul 31, 2012 5:02 AM

Not exactly iweb - need help with a graphic for my site

This doesn't fit anywhere so dumping it here. I drew by hand a graphic I want to use with iweb to put on my site as my site's logo. Main problem is that getting the background transparent isn't working well as when it was scanned the scanner didn't back the background "pure" white. I have tried adjusting the whitepoint and setting the color depth down, but still no good. I don't know a ton about graphic program use. I have an older copy of graphic converter that came on this powerbook when i got it. I would be fine having the graphic loose the marker look and have solid fill colors - just I am not good enough with computer drawing tools to do it on the computer! So I either need to get a volunteer to help me out, or some help with some detailed instructions to get this to work out... (also I am broke so no cost/shareware is only option here)
many thanks!!!!
I can get you a scanned jpg of the pic if needed.

THANK YOU/___sbsstatic___/migration-images/migration-img-not-avail.png so the tolerance makes it not care so much about the gradations in color? what else is tolerence good for?
I have a cleaner copy now after someone suggested GIMP, so played with it last night - though couldn't figure out transparency - that was clear on converter- just not cooperative till these wonderful directions.
So now I know how to do it without messing with the pic, and with messing with it - both good lessons and got a bit brighter color out of the deal.
many thanks for the straightforward and clear directions, they worked perfectly/___sbsstatic___/migration-images/migration-img-not-avail.png extra strars for you/___sbsstatic___/migration-images/migration-img-not-avail.png

Need help with XI certif for technical consultant

Hi XI experts ,
I am trying for certif for Development Consultant SAP NetWeaver u201904 - Exchange Infrastructure & Integration Technology - C_TBIT44_04 .
Can somebody please give me some sample questions and answers?
I really will appreciate such help since I donu2019t have any idea what kind of questions are at the exam!
I only have heard it is not an easy exam to take.?Is this true?
Also any shared experienced will be appreciate it. If you have, please give me more hands on information , not just course numbers and syllabus.
Looking forward to receive info from you. Please use emal contcts in my Business Card.
Thanks in advance all!
Jim

HI,
Yes its true ...any SAP certification is never ever be the easy stuff...that could be easily achievable....
You need to be well prepare for the Certification. There are many SDN links available for sample questions. you can just search on SDN as well as on Internet.
https://www.sdn.sap.com/irj/sdn/developerareas/xi?rid=/webcontent/uuid/a680445e-0501-0010-1c94-a8c4a60619f8
1. SAP XI Certification - Important Topics
2. Regarding XI Certification Material.
3. Xi sample Certification questions
XI certification passing used to be normally 65%. It may vary based on the runtime exam rules.
There are marks as well as no of questions allocated for every section, so you may refer below link
you can go to the following site and check the information.
https://service.sap.com/%7Esapidp/011000358700005902252004E
https://service.sap.com/~sapidp/011000358700003595762004E
SAP XI Certification - Important Topics All about XI certification
Thanks
Swarup

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