https://docs.oracle.com/cd/E11882_01/server.112/e40540/tablecls.htm#CNCPT88804
Is it third normal form or maybe fourth normal form ? I know that mostly database have only third normal form.
Based on the LOCATION having a STATE_REGION column in it, as well as a COUNTRY_ID, I'd say that it fails the test for second normal form because the same STATE_COUNTRY could be associated with multiple countries through an error in updating the table.
Related
I have created sales master and sales detail (master/detail) relationship form.
I have entered record and saved it ...
Through another form, i hv updated few fields of sales_master table .. see below example
During data entry - Like ... Sal_OrdStatus = 'Open' and CashRcvd_Status='P'
Updating these fields through payment form Sal_OrdStatus = 'Closed' and CashRcvd_Status='R'
After this, when I am entering/execute those records where both fields are updated
then see below error even record is available in the database/table
frm-40301 query caused no records to be retrieved, re-enter
enter image description here
Please advise solution/ guideline
Thanks
Javed Akram
Querying data block won't return anything if there are no rows in the table at all, or if condition you set prevents any rows to be retrieved.
As some rows obviously exist (you updated them, not deleted), then it is the latter.
Use get_block_property built in and its last_query property (you can try default_where as well) to see which query was really executed; you'll see the where clause, and that should help you find the culprit. Once you know it, you'll be able to fix it.
I have an APEX form I'm developing for "user settings". I have a table with a sequence as a primary key and the users ID in another column...in addition to a few columns where each users saved settings are stored (things like "N" for do not receive notices).
I haven't used Oracle APEX in a while so excuse this likely newbie question...The insert works fine, but I'm having trouble with making the form only show the current users values. In my Form Region the source is set to my Table, and I have a WHERE clause like this:
USER_ID = 813309
But that's not working (813309 is my id and I'm just hard-coding it for now). The form always comes up with a "New" record.
For a form to load a specific record you can set the primary key page item to the value you need. You can do so in the url using the link builder from another page or you can set a computation on the item. That is what I would try in your case: add a computation to your item P_USER_ID of type "Static Value" with value 813309. Make sure the computation happens before the "Fetch Row" - the value obviously needs to be set before the process runs.
In such cases, I prefer creating a Report + Form combination (using the Wizard, of course): it creates an interactive report (so that you can review data in a table), and a form which is used to add new records or update/delete existing ones.
Doing so, when you pick a user in interactive report and click the icon at the beginning of a row, Apex redirects you to the form page, passing primary key column value to the form which then fetches appropriate data from the table.
Not that it won't work the way you're trying to do it, it's just simpler if you let Apex do everything for you.
So: did you create an automatic row fetch pre-rendering process? If not, do so because - without it - Apex doesn't know what to fetch. Also, if you hardcoded user_id, it won't do much good. Consider storing username into the table so that you could reference it via :APP_USER Apex variable.
I am working for a hospital and must create a form which MDs can use to submit accounts of child abuse. I must use Microsoft Access.
I have created the form itself, but I must now create a way which information can be harvested from the form. For example, if the doctor inputs the age, where can I store this?
I know access works through fields, but not how to create them. Is it useful here to use excel?
Thank you.
Condolences on having to use Access :-) Been there, done that.
Access stores the data in "tables". A "form" is just a front end for entering or displaying table data. When a doctor enters the age, that field in the form needs to be linked to a column in the underlying table.
When you want to create a "report", you will first need to create a "query" that selects and sorts the data from one or more "tables". You can see the query results in a spreadsheet format while you are designing the query. Then you can create a "report" which is a formatted layout for the query results.
I would recommend a book like Access 2010: The Missing Manual to help you get up to speed on Access quicker.
I have a Master Detail form in my Oracle APEX application. When I am trying to update data in this form, I am getting below error.
Current version of data in database has changed since user initiated
update process. current row version identifier =
"26D0923D8A5144D6F483C2B9815D07D3" application row version identifier
= "1749BCD159359424E1EE00AC1C3E3FCB" (Row 1)
I have cleared browser cache and try to update. But it not worked.
How can I solve this?
I have experienced similar problem where my detail records set has timestamp fields. By default master detail wizard creates the timestamp fields as date picker type fields. If you set the date format on these, it would resolve the issue.
This blog post tries to address this issue on a Tabular Form (I know that's not what the original issue was with, but thought it might be related). It says the same as #sangam does below.
Short version: If you have an updated field that's timestamp datatype, you should set a date/time format.
http://apexbyg.blogspot.com/2015/05/tabular-form-bug.html
My tabular form has a field that's timestamp datatype, but I had already set a date format, so this didn't help me.
Here's another possibility, which I discovered was the case in my application.
That would be if the data the original checksum was calculated on is truly different than the pre-update checksum calculation, due to a design-flaw in your query!
In my application, the source for one of the updateable fields was COALESCE(name_calced, name_preferred). In the source table, the person's name could already be loaded in the record by an external process and we save it to one field - name_calced. But the end-user can enter a preferred name, which we wanted to save to the name_preferred field. We wanted to initially populate the displayed, updateable tabular form field with name_calced, if one existed, or name_preferred if the user had already provided a preferred name. Then they could change that value and save it back to the database.
I finally discovered that the Save action threw the error message if name_calced was non-null, but name_preferred was null. I realized that the initial checksum was calculated based on name_calced, but the pre-update checksum was based on name_preferred, so the application thought someone had changed the value in the background and showed the error message.
What I don't understand is how this problem didn't show up in the past 3 years the application has been running in production!
My solution is to make the field source only on name_preferred, which immediately solved this problem. I also think the back-end process will also get changed to pre-populate that table field from name_calced, so the user always sees the base value, if there is one.
I just had this issue myself. Now, I realize that tabular forms are deprecated at this time, but I have an application that was developed beforehand and still uses them. This issue occurred and I had to get one of our big guns at Oracle to help me out. I do a lot of DB work and a decent amount of Apex development but I'm more of a Java, WebLogic, etc guy, and I really couldn't figure this one out.
In my case, it turned out to be really simple. One of the columns in my tabular form was a hidden field, generated via a sub query. Being hidden, this column is not editable by the user and should not be part of the MRU update. I had the field set to "Hidden Column (saves states)" and setting its type to "Hidden Column" fixed the issue. So, this leads to sub queries being executed in such a way as to change the checksum for the overall query before hitting submit (save), causing the error.
For those who are continuing to troubleshoot this, look at your query for every field that you have specified and note which columns are editable in the tabular form. All other fields should be set in a way that makes them not save state so that they are not part of the update.
I had this error when I had two update processes processing on submit.
My solution was to add a condition to both processing steps. I had forgotten to do this when I made an additional process for Button A, but I never updated Button B to limit it's behaviors.
Navigation:
Processing -> Processes -> [Your Process Name] -> Server-side Condition -> When Button Pressed = [Your button Name]
In my case I had a column from a secondary table that was not set as Query Only and was being updated! The error would occur trying to save a column not in the table being updated. It took me half a day to figure it out (the column names were the same).
Set your Link column hidden to display only in the form.
Set "Send On Page Submit" to 'No' or disable the link column that is your primary key ( Rownum/rowid/id etc).
Hope it will work for you.
I have noticed this error comes when I was working Tabular Form and has disabled one of the form operations i.e. by setting server-side condition to "Never" for add, apply changes (submit) buttons
When I have restored back to its original state, it worked as expected.
In case you have to hide Add/Update button, use some other option.
https://compknowledgebase.blogspot.com/2018/12/oracle-apex-error-current-version-of.html
we have requirement like below :
For each customer will upload different files having different columns, column names are different from one client to another client and change in the number columns also.
For that one we will stored all the details in one table like
column1,column2,column3 ...........columnN
And will store column mapping some other table
First name=column1
Second Name=Column2
like this, up to this is ok ,but if we are using entity framework how stronly types will work in this case.
In the front end will show the combox box which will display all the client and we will show the data in the grid
Here is important thing is we have to show the End user column name instead our column name like column1,column2
Out put sholud be like below
Combox box ---- Client name
Grid
First name Second Name
---------------------------------
Harish Kumar
EF is not good choice for this type of application. It will map exactly what you have in database - one big entity with Column1, Column2, etc. properties and one entity with properties like ColumnName, PropertyName. That is all because EF doesn't support advanced data driven mapping.
Your UI / logic will need some logic to correctly interpret these data and moreover it will also have to correctly transform user input and actions back to EF understandable form.
Imho using EF for this is overhead, use ADO.NET directly. Also check SharePoint because it has this already implemented.