When / why use XML to store data instead of database table ?

Hi All,
I still not use XML much in applications and don't know much about its utilization.
I read here and there about storing data as XML instead of into database tables.
- could any body please tell me when / why use XML to store data instead of database table ?
e.g : store inventory per warehouse in XML format. ?
- What is the other cases or reasons of extracting database records into XML or vice versa ?
- is there any good pdf on this ?
Thank you for your help,
xtanto

It depends entirely what you want to accomplish with the 'XML in the database'. There are basically 3 independent methods: As CLOB, as XMLType views or as native XMLType 'columns'
Each method has advantages and disadvantages, especially in the performance vs purpose tradeoff.
The Oracled Press book "Oracle Database 10g XML & SQL Design, Build, & Manage XML Applications in Java, C, C++, & PL/SQL" is highly recommended for anyone interested in Oracle and XML. http://books.mcgraw-hill.com/getbook.php?isbn=0072229527&template=oraclepress

Similar Messages

Using XML to exchange data between different databases?

Hi,
Does anyone know of any case-studies or tutorial's where XML has been used to transfer data between different databases... i.e. oracle to sql server?
I basically looking into the differences between two schema's and what sort of tranformations need to take place.
Thanks in advance guys!

Hi,
Does anyone know of any case-studies or tutorial's where XML has been used to transfer data between different databases... i.e. oracle to sql server?
I basically looking into the differences between two schema's and what sort of tranformations need to take place.
Thanks in advance guys!

Using XML as a Data Source

In http://download.oracle.com/docs/cd/E14571_01/bi.1111/e10540/datasource.htm#CHDBCAIJ it states you can use XML as your data source and mentions...
URLs can include repository or session variables, providing support for HTTP data sources that accept user IDs and passwords embedded in the URL. For example:
http://somewebserver/cgi.pl?userid=valueof(session_variable1)&password=valueof(session_variable2)
I'm trying to pass this:
http://somewebserver/cgi.pl?userid=valueof(NQ_SESSION.USER)
but when I try that I can see in my web server logs that the content of the userid variable is 'valueof(NQ_SESSION.USER)' so it's not passing the results to the web server, just the text. Any ideas what's going on? Is my syntax correct? Thanks!

Hey,
There are a few things to look at when using session and repository variables within the RPD.
One of the first documents you need to reference is the "What is the Syntax for Referencing Variable?" section within the OBI documentation. In addition look at this section on how to use variables in the RPD, http://download.oracle.com/docs/cd/E14571_01/bi.1111/e10540/variables.htm#BIEMG3104
Basically you are trying to use NQ_SESSION.USER which is the syntax for trying to show the user name is Presentation Services. Of course you can see this in your web server logs because that is the correct syntax for presentation services web tier but not the RPD where you define your XML Source.
You need to try either use VALUEOF("USER") or you are simply forgeting to put the syntax surrounded by single-quotes like, http://somewebserver/cgi.pl?userid='valueof(NQ_SESSION.USER)' to pull the system session variable into the XML URL as needed.
Try those options and let me know if that works.
Please mark this as the correct answer or helpful.
Cheers,
Christian
http://www.artofbi.com
Edited by: Christian Screen on May 8, 2011 10:32 AM

Why use XML

I can't find any true tangible benefits to using XML
to transfer data from legacy systems, in comparison to say, using an external file and loading into existing
schema objects, which we do use.
We have 4-6 internal systems, and many many external systems, that currently use text or DB links to transfer data around, and of course the manager hears the catch-phrase-of-the-day XML, all time time and wants us to use it. We do a lot of complicated reading of the files, i.e. headers and multiple layers of detail (header & detail lines can have infinite detail lines)
Can somebody offer up why use XML? (white pages, something I can get proof with) or why not to use it.
To me, completly different layer of technology, everybody has a "standard", nobody has the same standard.
More storage in the database (being a DBA I don't like this), and seems to need its own full time employee to manage it (the IT director won't like that).

SO... you STILL have to get what the file looks like... can't be read from inside the file (like a decent CSV), hasn't somebody realized that keep layout seperate from the data during outside transfers is stupid?
I understand the tags etc, I guess because disk is free, and networks are faster, lets clog them up with useless info <the tags>. I have loaded/extracted XML from the database (what a PITA that is) before I asked this question.
My question is, can somebody please point me in a direction of the benefits of using XML to transfer data between systems.
Why use XML? Why is XML better than a CSV (or formatted text file)????
What benefits does it have over those file types??
A great list of pro/cons would be nice... everything on oracle web sites, and google say all basically say the same thing... "use it because it's new and neat"
Why should we spend hundreds of man hours reinventing the wheel?
What tangible benefits are there to using it?
Might be the wrong forum, if so, please point me in the right direction.

When we use XML,XSD,WSDL files to create SOA webservices in jdeveloper ,what will happen means internally,how will useful xml ,xsd,wsdl for composite ?

When we use XML,XSD,WSDL files to create SOA webservices in jdeveloper ,what will happen means internally,how will useful xml ,xsd,wsdl for composite ?
How xml will send message to XSD then how wsdl interaction then to composite ?

XSD (XML Schema Definition), is an abstract representation of a XML characteristics.
The WSDL (Web Services Description Language), describes the functionality offered by your web service.
You can say what operations your services offers, and describe the messages used for this operations in your XSD.

When i use the apple store, Your request is temporarily unable to be processed. what is wrong with it? can someone help me?

when i use the apple store, Your request is temporarily unable to be processed. what is wrong with it? can someone help me?

Try turning off the Firewall in System Preferences > Security (or Security & Privacy) > Firewall
Disable anti virus software if you have that installed before downloading media from the App Store.
When you post for help, please tell us which Mac OS X you have installed. Thanks !

Create a data source and database tables using WSAD

Hi, guys:
the following is from a tutorial:
http://www-106.ibm.com/developerworks/websphere/techjournal/0306_wosnick/wosnick.html
"To create the data source and Cloudscape database tables automatically, right click on the HelloWorldServer in the Servers view, and select the Create tables and data sources menu item. A dialog will then display showing that the data source and database tables were created successfully (Figure 5)."
I am using WSAD 5.0 trial version. I cannot find Create tables and data sources menu item if I right click on the HelloWorldServer in the Servers view. I am wondering if this is because trial version does not have this feature?
regards

This question is a little off topic but you may get a reply. Please note this forum is about Sun's J2EE SDK and its related technologies. You may have better luck posting your question to an IBM specific resource.

Can anyone confirm the date used for pushing the data into AR interface table? Is it abse don Actual ship date or scheduled ship date?

Can anyone confirm the date used for pushing the data into AR interface table? Is it abse don Actual ship date or scheduled ship date? We are facing a scenario where trx date is lower than the actual ship to which logically sounds incorrect.
Appreciate any quick response around this.

Hi,
Transaction date will be your autoinvoice master program submission level date (If you haven't setup any logic.
Please check the program level default date, if user enter old date ststem will pick the same.
Customer is trying to set the value of the profile OM:Set receivables transaction date as current date for non-shippable lines at the responsiblity level. System does not set the transaction date to current date in ra_interface_lines_all.
CAUSE
Customer has used the functionality in R11i. But after the upgrade to R12, the system functions differently than R11i.
SOLUTION
1.Ensure that there are no scheduled workflow background process run.
2.Set the profile "OM: Set Receivables Transaction Date as Current Date for Non-Shippable Lines" at Responsibility level only as Yes.
3.Now switch the responsibility to which the profile is set.
4.Create order for Non-Shippable Lines and progress it to invoicing.
5.Ensure that the 'workflow background process' concurrent program is run in the same responsibility and this line is considered in it.
6.Now check if the 'SHIP_DATE_ACTUAL' is populated to ra_interface_lines_all

How to fetch data from single database table using 2 internal tables.

Hi friends,
i am a new user of ABAP and also SDN.
i need a help.
i want to fetch data from one database table based on primary keys of 2 internal tables. how to put in where clause.
Thanks in advance.

hii
refer to following code ..i hope it will help you
SELECT matnr                         " Material Number
    FROM mara
    INTO TABLE i_mara
   WHERE matnr IN s_matnr.
IF i_mara[] IS NOT INITIAL.
    SELECT matnr                       " Material Number
           werks                       " Plants
           prctr                       " Profit Center
      FROM marc
      INTO TABLE i_marc
       FOR ALL ENTRIES IN i_mara
     WHERE matnr = i_mara-matnr
       AND werks IN s_werks.
ENDIF.                               " IF i_mara[] IS NOT INITIAL
i_output = i_marc.
IF i_marc[] IS NOT INITIAL.
    SELECT matnr                       " Material Number
           werks                       " Plants
           lgort                       " Storage Location
      FROM mard
      INTO TABLE i_mard
       FOR ALL ENTRIES IN i_marc
     WHERE matnr EQ i_marc-matnr
       AND werks EQ i_marc-werks
       AND lgort IN s_lgort.
ENDIF.                               " IF i_mara[] IS NOT INITIAL
regards
twinkal

Creating BAM report using data of two database tables. Say "EmployeeTable" and "DepartmentTable

I want to populate data from two database tables into a BAM report. I have created two data objects for the tables and want to create 3rd data object so that it can take the data from the other data objects automatically. Is there any such facility within BAM?

Hi
1. I am not sure if you have option to combine multiple DataObjects like that.
2. For your scenario, on Database side itself, I would recommend Create a VIEW that joins these 2 Tables and pull the required Columns and add required conditions. Verify the VIEW has all the rows expected.
3. Then create DataObject for this View. Once you have DataObject, create the Report.
Thanks
Ravi Jegga

How to input data in a database table without knowing in advance table and column configurations

Hi,
I have a problem using LabVIEW for input data (manually) in a SQL database. I have about 40 tables in the database, each of them is related to a specific engine component. I need to create a user interface (maybe visualizing the table with a table control) where the users can insert data in the database table fields. Could someone give me some suggestion on how to do it?
Using the DB tools insert data.vi I need to know in advance the column configuration of the table, but in my database each table has its own structure! So do I have to create 40 different masks, one for every different table?
Thanks in advance.
Michela

I have not actually used the LV SQL Toolkit, but I will try and offer high level ideas :-)
when you have retrieved the construction data for a table, you should be able to use array and cluster indexing to aquire the names of the fieds, enough to create a labelled table on the LV Front panel.
After completing a new entry you can INSERT the entry into the database using the same data.
Is the SQL toolkit an additional purchase, or included in newer versions as standard? If you post a sample of the cluster/array that you retrieve, I could give you a sample VI to give you some pointers in creating the User Interface table
- Cheers, Ed

Deletion of data within the database tables

The user is trying to clean up the 2014 data within the database tables. He is running a delete function which keeps causing the log files
to exceed their limit. The tables are large and he is unable to delete the data in one command due to available size and logging. What is the best way to approach this?
Thanks,

Hi venkatesh1985,
According to your description, the user fails to delete data in tables due to the limited space of log file. Based on my research, this issue could occur when you use the delete statement(DELETE FROM ExampleTable) in a single transaction and consume all
available space on your transaction log disk.
To avoid this issue, you could use the two methods below to delete the data.
1. Use a loop combined with TOP and delete rows in smaller transactions as the following example. This method requires you to delete all the tables one by one.
SELECT 1
WHILE @@ROWCOUNT > 0
BEGIN
DELETE TOP (1000)
FROM LargeTable
END
For more information about the process, please refer to the article:
http://dbadiaries.com/how-to-delete-millions-of-rows-using-t-sql-with-reduced-impact
2. If you want to delete all the data from all tables in the specific database, you could script the entire database and all database objects. Then drop the database and recreate it using the script as the steps below.
a. In Object Explorer, expand the node for the instance containing the database to be scripted.
b. Point to Tasks, and then click Generate Scripts and click Next.
c. Select the option of 'Script the entire database and all database objects'.
d. Specify how scripts should be saved. You could save the script to a file or new query window. Click Next, then click ok.
e. Drop the database, and run the script in the query window to recreate it. For more information, please refer to the article:
http://msdn.microsoft.com/en-us/library/bb895179.aspx#Introduction
In addition, if possible, please increase the size of the log file or move the log file to a different disk with more disk space.
Regards,
Michelle Li

Can I restore the deleted statistical data from the database tables?

Hi all,
I have deleted the statistical data from the database tables like(Ex: RSDDSTAT, RSDDSTATWHM,..) by mistake through RSA1> Tools> BW Statistics for Infoproviders--> Delete.
Is there any way to restore the deleted data back? Thanks in advance.

Now I'm really confused-
Your first post said
"I have deleted the statistical data from the database tables like(Ex: RSDDSTAT, RSDDSTATWHM,..) by mistake through RSA1> Tools> BW Statistics for Infoproviders--> Delete."
but your last respsonse said
"I have deleted the BW Statistics data, not the actual data in RSDDSTAT tables through
RSA1 -> Tools -> BW Statistics for InfoProviders -> clicked 'Delete' bin to delete data."
If you used the RSA1 -> Tools -> BW Statistics for InfoProviders -> clicked 'Delete' - then you deleted the data from the RSDDSTAT tables. This assumes you accepted the default date range that would have popped up after the clicking on the Delete button which specified to delete thru the current date. If this is what you did, the data is gone. Your only hope is be to recover from a DB backup.
The data in the RSDDSTAT tables is what is used to feed the BW Statistics cubes, generally on a daily basis.

How to load text file data to Oracle Database table?

By using Oracle Forms, how to load text file data to Oracle Database table?

Metalink note 33247.1 explains how to use text_io as suggested by Robin to read the file into a Multi-Row block. However, that article was written for forms 4.5 and uses CREATE_RECORD in a loop. There was another article, 91513.1 describing the more elegant method of 'querying' the file into the block by transactional triggers. Unfortunately this more recent article has disappeared without trace and Oracle deny its existence. I know it existed as I have a printed copy in front of me, and very useful it is too.

Temporary data carriers for Database tables

hi Gurus,
How can we find temporary Data Carriers for database tables. For eg. when we craete a BOM in CS01/CS02 the data first goes to RC29P structure and when system finishes it goes to STPO.
This is one example. how canw e find other structures and theirs corresponding Database Tables?
Any idea?
Regards

Hi Greg,
Those are the aggregated tables. If they are not filled with data although the Portal Activity Report is activated, you should check whether the aggregation finished successfully.
In the older SPs there were some problems that were fixed in later SPs of 7.0.
In order to have the latest version of Portal Activity report, you can check SAP note 1084379 - Portal Activity Report - Latest Version (SDA file).
You can compare the SP via the MANIFAST file, as it contains the version and SP number.
In order to troubleshoot problems in Activity Report, you can follow SAP note: 1690023 - Portal Activity Report - Component-specific Note
Some basic checks that you can do:
Run query on the raw data tables to check since when there is data in those tables:
select min(timestamphour) from SAP<SystemID>DB.WCR_WEBCNODESTAT;
If there is too much data from long time ago, then you should delete the old data, and leave only the new data (there is anyways retention time for the data to be kept).
If there is no data, then it means that the Portal Activity Report does not collect data, and not really activated (usually this is not the case).
The aggregation runs every top of the hour, so you can check in the default traces for an error during that time.
In most of the cases something went wrong while aggregating the data.
As a result the aggregation is not finished, so the transaction is not being committed, and the aggregated tables stay empty.
If there is a DuplicateKeyException in the trace, you can follow SAP note 1054145 - Duplicate Key Exception.
If you have any more questions, please don't hesitate to ask.
I hope this information helps,
Thanks & regards,
Michal Zilcha-Lang

When / why use XML to store data instead of database table ?

Similar Messages

Maybe you are looking for