Update Entity Model from Database in edmx

Dear All
Thank you for your attention.
I would like to know the easy way to modify the edmx after changes of database.
e.g. I modified a order table 's primary key from OrderNumber to ID
and so the foreign key constraint to another table is also changed from OrderNumber to ID
then open existing edmx and 'Update Model from Database'.
The tables are changed but there are errors
Error 1
Error 111: Properties referred by the Principal Role t1 must be exactly identical to the key of the EntityType Model.t1 referred to by the Principal Role in the relationship constraint for Relationship Model.FK_t2_t11. Make sure all the key properties are specified
in the Principal Role.
and two relations exists
How to modify the current edmx to let it works?
Thanks
Best Regards
mintssoul

Hello mintssoul,
>>I would like to know the easy way to modify the edmx after changes of database.
I suggest you could firstly delete these modified entities in the design window(it will delete these type definition in emdx file) and then use Update Model from Database command to re-generate these entities.
Regards,
Fred.
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Update Model from database does not update Nullable Property -- Possible bug?

Hi,
I don't know if this is the correct forum.
When updating Model from database seems does not update the entity nullable property.
and it will not update the Default Value from the Backend (MSSQL) also.
I am using VS2008 SP1 3.5EF, XP64Bit Machine.
Thanks
vb.net GUI

maybe related..
today.. i changed the PK size.. from char(10) to char(36)
got many problems.. easy to fix...
but some query stop working:
Table1Record.Table2Reference.Load(); //i'm trying to load table2 from table1..
throw this error: A relationship multiplicity constraint violation occurred: An EntityReference expected at least one related object, but the query returned no related objects from the data store.
i get this error only when PK is greater than char(10)...
with SQL profiler.. i saw that PK was truncated to char(10) :
exec sp_executesql N'SELECT [... some fields...]
FROM [dbo].[Table1] AS [Extent1]
INNER JOIN [dbo].[Table2] AS [Extent2] ON [Extent1].[NoTable2] = [Extent2].[NoTable2]
WHERE [Extent1].[NoTable1] = @EntityKeyValue1',N'@EntityKeyValue1 char(10)',@EntityKeyValue1='a2164b14-e'
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i'm working with VS.NET 2008
so, i looked at Model1.Edmx... in notepad
CSDL was not changed when i did the "Update Model from Database" !!!
here is SSDL part:
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            <PropertyRef Name="NoTable1" />
          </Key>
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here is CSDL part:
        <EntityType Name="Table1">
          <Key>
            <PropertyRef Name="NoTable1" />
          </Key>
          <Property Name="NoTable1" Type="String" Nullable="false" MaxLength="10" Unicode="false" FixedLength="true" />
Cool.. i found the prob.... but why ? and how to correct this ? manually change Model1.Edmx in notepad ??
why the maxlength property is readonly in Model Browser pane ??
what about VS.NET 2010 ?! same prob ??
is it a bug or by design ?
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Hi Sakthimp,
Welcome to MSDN forum.
Your issue is out of support range of VS General Question forum which mainly discusses the usage of Visual Studio IDE such as
WPF & SL designer, Visual Studio Guidance Automation Toolkit, Developer Documentation and Help System
and Visual Studio Editor.
Because your issue only occurred with oracle database, moreover Oracle developed the Entity Framework for Oracle itself, I suggest that you can consult your issue on Oracle forum/community:
you will get better solution and support there.
Best regards,
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Hi forum,
I Have to migrate an existing application to JEE (with EJB3).
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"CMP provides you with database independence and less coding efforts."
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http://forum.java.sun.com/thread.jsp?forum=13&thread=318785
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Is it possible to update internal table from database table

Hello All:
I know how to update database table from internal table in one shot (batch) but is the reverse possible? Can I update some fields in an internal table from a database table in one shot (without looping) because my internal table is huge? Could you please provide me any ideas how to acheive something like this? Thanks in advance and answers will be rewarded.
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Hello my friend,
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UPDATE DBTABLE FROM TABLE IT_TABLE
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Gabriel

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Version 3.2.09 - Build MAIN-09.30
Hi,
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Yes, on the main toolbar, there's a blue button that points to the LEFT. Read more about that here.
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Hi experts!
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Hi Grigoria.
CRM only allows one first download of SD structure from R/3/ECC into CRM. Any changes in the organizational model on R/3 side (new sales office, new sales group, new combination allowed of distribution channel, division, etc) needs to be done manually on CRM side.
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I have Visual Studio 2010 on Windows 7 32bit.
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Francesco

A couple of things you could try:
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hi all,
can u tell me the possible ways to update a ztable from database table directly.
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points will be rewarded to all hlpful answers.

A slightly dirty solution:
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How to specifiy the provider to be Oracle.ManagedDataAccess.Client when creating a dynamic connection string with EF Code First from Database?

I am trying to use the relatively new Code First from Database with the newest EF (6.x) and on an Oracle database (11g, but I have installed the newest ODTwithODAC). First of all, it works fine as long as the connection string is inside the App.Config file. But when I try to build it dynamically in the C# code (or rather, statically at the moment) it fails. I have it working with a dynamically built connection string when doing Model from Database though, so I'm at a loss right now.
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PS: I have also posted this question on http://stackoverflow.com/questions/27979454/ef-code-first-from-database-with-managed-oracle-data-access-dynamic-connection because it is quite urgent and I'd like to use Code First from Database. Otherwise I'd have to go "back" to using Model from Database again, which is not ideal because we have updatable views where the .edmx-file has to be edited after every reload of the model, while with Code First from DB inserting into the view automatically works.

I am trying to use the relatively new Code First from Database with the newest EF (6.x) and on an Oracle database (11g, but I have installed the newest ODTwithODAC). First of all, it works fine as long as the connection string is inside the App.Config file. But when I try to build it dynamically in the C# code (or rather, statically at the moment) it fails. I have it working with a dynamically built connection string when doing Model from Database though, so I'm at a loss right now.
First, I have created a second constructor for the context class that takes a string and does base(connectionString). Then I build the connection string via
OracleConnectionStringBuilder oracleBuilder = new OracleConnectionStringBuilder();
oracleBuilder.DataSource = "TEST.BLA.COM";
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oracleBuilder.Password = "abc";
oracleBuilder.PersistSecurityInfo = true;
string connection = oracleBuilder.ToStrin();
Now trying to open an EntityConnection by giving to it this provider-specific connection string (or even the static one from the App.Config) doesn't work; I get "keyword not supported: user id"). Trying it by creating a context and giving this connection string doesn't work either. I'm pretty sure that this is because I didn't specify the provider to use; after all, it should use the Oracle.ManagedDataAccess.Client provider and not an SQL Server based one.
I then tried to get around this by using an EntityConnectionStringBuilder on top and specifying the provider keyword there, but then I get "keyword not supported: provider" when using it in the context constructor, and "the 'metadata' keyword is always required" when using it with the EntityConnection constructor.
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using (var context = new Model())
context.Database.Connection.Open();
context.Database.Connection.Close();
When I read context.Database.Connection.ConnectionString, it is exactly the provider-specific connection string I created above, but I don't know where to specify the provider again. Do you know of any way to do this? Certainly there must be one.
PS: I have also posted this question on http://stackoverflow.com/questions/27979454/ef-code-first-from-database-with-managed-oracle-data-access-dynamic-connection because it is quite urgent and I'd like to use Code First from Database. Otherwise I'd have to go "back" to using Model from Database again, which is not ideal because we have updatable views where the .edmx-file has to be edited after every reload of the model, while with Code First from DB inserting into the view automatically works.

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Rich P

Hello Rich,
>> Where can I learn more about the innerds of Entity Framework?
The channel 9 is a good site for learning about the Entity Framework, there are lots of deep topics introduced by the team members:
https://channel9.msdn.com/Tags/entity+framework
You could also download
source code of Entity Framework so that you could know how the Entity Framework provider works.
Regards.
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Attachments:
DataBase.llb ‏40 KB

Try this one, after updating the names for database and the table you want.
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Attachments:
EditdatabaseMe.vi ‏57 KB

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Update Entity Model from Database in edmx

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