entity framework - EntityFramework with Oracle Insert many to many error -


I'm using EntityFramework 5.0 to model your Oracle 11g database. I have 3 tables with several tables. 

  Make Table Zsa (ID number (10,0) is not, name VARCHAR2 (20 BYTE) No Kantrostent za_pk primary key (id)); Table Create Zb (ID number (10,0) NULL, name VARCHAR2 (20 BYTE) No, no, Kantroln zb_pk create PRIMARY KEY (ID)) Table (Za_id number (10,0) zero, zb_id NUMBER (10, 0) void contract zc_pk primary key (za_id, zb_id), contract zc_za_fk foreign key (za_id) references (ID), CONSTRAINT zc_zb_fk foreign key (zb_id) reference zb (id))

table To add a record of inserting, I add and trigger the sequences in each table: 

  Select the new old ROW BEGIN ZA_SEQ.nextval as old as the first trigger jade-transger before jade referencing: Double by NEW.ID; End; For each line, create new ZB as new ZB-transerring injector before creating the tracer zb_trigger or start over again: Select ZB_SEQ.nextval: Dual to NEW.ID; End;

Now, when I use this code to insert records in the database: 

  ZA za = new za (); Za.NAME = "ZA1"; ZB zb1 = new ZB (); Zb1.NAME = "ZB1"; ZB zb2 = new ZB (); Zb2.NAME = "ZB2"; Za.ZB.Add (ZB1); Za.ZB.Add (zb2); Institutions institutions = new institutions (); Entities.ZA.Add (ZA); Entities.SaveChanges (); I get this error: An error occurs when saving such entities that do not expose foreign key properties for their relationship. EntityEntries property will return to the taps because one entity can not be identified as the source of exception. While handling exceptions, savings can be made easier by highlighting foreign key properties in your unit types. See Inraksepshn For more information:  
  Inraksepshn: ORA -022 9 1 violate the integrity constraint (Simka.ajisi_jibi_fke) - did not match the original key  
 
 So how can I include several such relationships in the table to record?

I've got a few days after item. When I make a model from the database, all the properties of the unit have its property store-granitary pattern identified. as shown in this photo


Comments

Post a Comment

Popular posts from this blog

ios - How do I use CFArrayRef in Swift? -

I am using Objective-class in my Swift Project through a bridging header. The method signature looks like this: - Some cement (some type) some parameters; I started by getting an example of class, calling method, and storing the value: var myInstance = MyClassWithThatMethod (); Var cfArr = myInstance.someMethod (some value); Then try to get the value in the array: var valueInArrayThatIWant = CFArrayGetValueAtIndex (cfArr, 0); However, I get the error unmanaged & lt; Cfarray & gt; Not like 'CFArray' . Unmanaged & lt; Cfarray & gt; also means? I looked, but I do not need to change the array in a fast array (though it would be good). I need to be able to get value from the array. I also tried CFArray method to pass in a function: func doSomeStuffOnArray (myArray: NSArray) {} Although I get the same error when using: doSomeStuffOnArray (cfArr); // unmanaged & lt; CFArray & gt; I am using CFArray because I want to sto...
Read more

eclipse plugin - Run java code error: Workspace is closed -

To create an automated project, I created a plug-in project with the following dependencies: Org.eclipse.core.resources org.eclipse.equinox.registry org.eclipse.core.runtime and the following The Java class is located in the src folder: Package Examiner; Import org.eclipse.core.resources.IProject; Import org.eclipse.core.resources.IWorkspaceRoot; Import org.eclipse.core.resources.ResourcesPlugin; Import org.eclipse.core.runtime.CoreException; Import org.eclipse.core.runtime.IProgressMonitor; Import org.eclipse.core.runtime.NullProgressMonitor; Public class tes {public static zero main (string [] args) {// TODO auto generated method stub IProgressMonitor progress monitor = new NullProgressMonitor (); IWorkspaceRoot root = ResourcesPlugin.getWorkspace (). GetRoot (); Ipoject project = root.jetproject ("desired projectname"); Try {Project.create (progress monitor); Project.open (progressMonitor); } Grip (CoreException E) {// TODO Auto generated blocking block e....
Read more

c - Error on building source code in VC 6 -

When I create my project in VC6, the BScMKE reports the following error Linking .. Creating Library ... .. / ... / PB / Bean / Debub / ICEERP.Lib and Object ........ P.B. / Bean / DBube / ICREPlay.APP Browse information file ... BSMMK: ​​error can not be read from BK 1505: file '../../PB/bin/TmpOut/ICReplay/Debug/ICReplay_PB.bsc' Error executing bscmake.exe Can someone help me? 2 Reason for reference from: "ICReplay_PB .bsc "file will be corrupted The trunk of the file will be happening with the compiler running out of disk space or is being interrupted when creating .sbr file I think this answer will help you!
Read more