Foreign Key - Relationship

Dec 7, 2004

I have two tables and I'm trying to create a one to many relationship (master table can have many records in the details table)

I created a column in my details table with with ID of the primary key in the master table.

The primary key ID isn't inserted as a foreign key when I insert a record. I specifed the relationship in EM.

Not sure why the primary key ID isn't inserted as a foreign key into my details table?

Any help is greatly appreciated. Thanks.
-Dman100-

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Help With Foreign Key Relationship

Jul 3, 2007

When I try to insert a record on my DB (SQL 2005 Express) I get a constraint error. This is my table setup which has been simplified to expose the problem I have:
Categories TABLEint CatId PKvarchar CatName    :
Items TABLEint ItemId PKvarchar ItemName      :
X_Items_Categoriesint CatIdint ItemId
So  basically I have a one-to-many relationship between Items and Categories, in other words each item is associated to one or more categories and this association is done via the X_Items_Categories cross table. On this cross table I set two constraints:


The CatId of each entry in the cross table (X_Items_Categories) must exist in the Category table, and

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Hi
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Hey guys,

I would like to know what the following options means when we set a foreign key relationship between two tables and when to use them ( yes or no):

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Thx.

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Bob K.

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Sep 28, 2007



Hi i have two tables

X and Y

X is the Parent table and Y is the child

X has gpikey char(14) and Record type char(1) as Primary key

y has Name as primary key and column xgpi char(14) which should be the foreignkey to table X

what approach should i take to establish relationship between these two tables.

gpikey of recordtype 5 is equal to value in xgpi in table y

ex: data
Table X
gpikey recordtype

123 1
2345 2
272626 5

Table Y
Name XGPI
dhdhd 272626

x and y are having one to many relationships

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Jul 4, 2015

I'm having trouble defining a relationship in SQL Express with a concatenated foreign key.

I have 3 tables. Date, Company and Detail

Date has a PK1

Company has a PK2

Detail has a concatenated foreign Key of PK1, PK2

When I go to set the foreign key relationship in Management Studio 'Tables and Columns', it seems I can only select 1 primary key table on the left for my 2 foreign keys. How can I add 2 primary key tables to point to each FK in my detail table?

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Jun 10, 2004

Hi,

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Also i have a table called KRS where there are the same columns, when a userid is given i want to auto fill in the departmentid,

Can someone help me with this?

Cheers Wim

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I want to create a table with primary key , and put relationship with second table.

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I have to load data into destination table, it has foreign key relation to two different tables called person table and organization table . sample data to be loaded is like

person_id organization_id
1                   Null
2                    NULL
Null                1
null               null

person table and organization table doesn't have null values in them, when I try to load this data none of them are laoded, I know either person_id or organization id having null value is failing foreign key constraint. But I want to transfer all the rows except  the ones having both nulls. how this can be achieved ?

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Should we have foreign key relationship between two slowly changing dimensions?

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Jan 28, 2008

Hi all,

I use the following 3 sets of sql code in SQL Server Management Studio Express (SSMSE) to import the csv data/files to 3 dbo.Tables via CREATE TABLE & BUKL INSERT operations:

-- ImportCSVprojects.sql --

USE ChemDatabase

GO

CREATE TABLE Projects

(

ProjectID int,

ProjectName nvarchar(25),

LabName nvarchar(25)

);

BULK INSERT dbo.Projects

FROM 'c:myfileProjects.csv'

WITH

(

FIELDTERMINATOR = ',',

ROWTERMINATOR = ''

)

GO
=======================================
-- ImportCSVsamples.sql --

USE ChemDatabase

GO

CREATE TABLE Samples

(

SampleID int,

SampleName nvarchar(25),

Matrix nvarchar(25),

SampleType nvarchar(25),

ChemGroup nvarchar(25),

ProjectID int

);

BULK INSERT dbo.Samples

FROM 'c:myfileSamples.csv'

WITH

(

FIELDTERMINATOR = ',',

ROWTERMINATOR = ''

)

GO
=========================================
-- ImportCSVtestResult.sql --

USE ChemDatabase

GO

CREATE TABLE TestResults

(

AnalyteID int,

AnalyteName nvarchar(25),

Result decimal(9,3),

UnitForConc nvarchar(25),

SampleID int

);

BULK INSERT dbo.TestResults

FROM 'c:myfileLabTests.csv'

WITH

(

FIELDTERMINATOR = ',',

ROWTERMINATOR = ''

)

GO

========================================
The 3 csv files were successfully imported into the ChemDatabase of my SSMSE.

2 questions to ask:
(1) How can I designate the Primary and Foreign Keys to these 3 dbo Tables?
Should I do this "designate" thing after the 3 dbo Tables are done or during the "Importing" period?
(2) How can I set up the relationships among these 3 dbo Tables?

Please help and advise.

Thanks in advance,
Scott Chang

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Cannot INSERT Data To 3 Tables Linked With Relationship (INSERT Statement Conflicted With The FOREIGN KEY Constraint Error)

Apr 9, 2007

Hello
 I have a problem with setting relations properly when inserting data using adonet. Already have searched for a solutions, still not finding a mistake...
Here's the sql management studio diagram :

 and here goes the  code1 DataSet ds = new DataSet();
2
3 SqlDataAdapter myCommand1 = new SqlDataAdapter("select * from SurveyTemplate", myConnection);
4 SqlCommandBuilder cb = new SqlCommandBuilder(myCommand1);
5 myCommand1.FillSchema(ds, SchemaType.Source);
6 DataTable pTable = ds.Tables["Table"];
7 pTable.TableName = "SurveyTemplate";
8 myCommand1.InsertCommand = cb.GetInsertCommand();
9 myCommand1.InsertCommand.Connection = myConnection;
10
11 SqlDataAdapter myCommand2 = new SqlDataAdapter("select * from Question", myConnection);
12 cb = new SqlCommandBuilder(myCommand2);
13 myCommand2.FillSchema(ds, SchemaType.Source);
14 pTable = ds.Tables["Table"];
15 pTable.TableName = "Question";
16 myCommand2.InsertCommand = cb.GetInsertCommand();
17 myCommand2.InsertCommand.Connection = myConnection;
18
19 SqlDataAdapter myCommand3 = new SqlDataAdapter("select * from Possible_Answer", myConnection);
20 cb = new SqlCommandBuilder(myCommand3);
21 myCommand3.FillSchema(ds, SchemaType.Source);
22 pTable = ds.Tables["Table"];
23 pTable.TableName = "Possible_Answer";
24 myCommand3.InsertCommand = cb.GetInsertCommand();
25 myCommand3.InsertCommand.Connection = myConnection;
26
27 ds.Relations.Add(new DataRelation("FK_Question_SurveyTemplate", ds.Tables["SurveyTemplate"].Columns["id"], ds.Tables["Question"].Columns["surveyTemplateID"]));
28 ds.Relations.Add(new DataRelation("FK_Possible_Answer_Question", ds.Tables["Question"].Columns["id"], ds.Tables["Possible_Answer"].Columns["questionID"]));
29
30 DataRow dr = ds.Tables["SurveyTemplate"].NewRow();
31 dr["name"] = o[0];
32 dr["description"] = o[1];
33 dr["active"] = 1;
34 ds.Tables["SurveyTemplate"].Rows.Add(dr);
35
36 DataRow dr1 = ds.Tables["Question"].NewRow();
37 dr1["questionIndex"] = 1;
38 dr1["questionContent"] = "q1";
39 dr1.SetParentRow(dr);
40 ds.Tables["Question"].Rows.Add(dr1);
41
42 DataRow dr2 = ds.Tables["Possible_Answer"].NewRow();
43 dr2["answerIndex"] = 1;
44 dr2["answerContent"] = "a11";
45 dr2.SetParentRow(dr1);
46 ds.Tables["Possible_Answer"].Rows.Add(dr2);
47
48 dr1 = ds.Tables["Question"].NewRow();
49 dr1["questionIndex"] = 2;
50 dr1["questionContent"] = "q2";
51 dr1.SetParentRow(dr);
52 ds.Tables["Question"].Rows.Add(dr1);
53
54 dr2 = ds.Tables["Possible_Answer"].NewRow();
55 dr2["answerIndex"] = 1;
56 dr2["answerContent"] = "a21";
57 dr2.SetParentRow(dr1);
58 ds.Tables["Possible_Answer"].Rows.Add(dr2);
59
60 dr2 = ds.Tables["Possible_Answer"].NewRow();
61 dr2["answerIndex"] = 2;
62 dr2["answerContent"] = "a22";
63 dr2.SetParentRow(dr1);
64 ds.Tables["Possible_Answer"].Rows.Add(dr2);
65
66 myCommand1.Update(ds,"SurveyTemplate");
67 myCommand2.Update(ds, "Question");
68 myCommand3.Update(ds, "Possible_Answer");
69 ds.AcceptChanges();
70

and that causes (at line 67):"The INSERT statement conflicted with the FOREIGN KEY constraint
"FK_Question_SurveyTemplate". The conflict occurred in database
"ankietyzacja", table "dbo.SurveyTemplate", column
'id'.
The statement has been terminated.
at System.Data.Common.DbDataAdapter.UpdatedRowStatusErrors(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)
at System.Data.Common.DbDataAdapter.UpdatedRowStatus(RowUpdatedEventArgs rowUpdatedEvent, BatchCommandInfo[] batchCommands, Int32 commandCount)
at System.Data.Common.DbDataAdapter.Update(DataRow[] dataRows, DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.UpdateFromDataTable(DataTable dataTable, DataTableMapping tableMapping)
at System.Data.Common.DbDataAdapter.Update(DataSet dataSet, String srcTable)
at AnkietyzacjaWebService.Service1.createSurveyTemplate(Object[] o) in J:\PL\PAI\AnkietyzacjaWebService\AnkietyzacjaWebServicece\Service1.asmx.cs:line 397"


Could You please tell me what am I missing here ?
Thanks a lot.
 

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Mar 25, 2006

How can I create a one-to-one relationship in a SQL Server Management Studio Express Relationship diagram?

For example:
I have 2 tables, tbl1 and tbl2.

tbl1 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}

tbl2 has the following columns:
id {uniqueidentifier} as PK
name {nvarchar(50)}
tbl1_id {uniqueidentifier} as FK linked to tbl1.id


If I drag and drop the tbl1.id column to tbl2 I end up with a one-to-many relationship. How do I create a one-to-one relationship instead?

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   Operation (Commodity, OperationKey)   ==========> 
Commodity (Commodity)
                      /                                                                        
/
                       |                                                                         
|
   Advice (OperationKey)       ====== (inactive)=======>
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I have the following measure:

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operation
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Hi.
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1 named activedir

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Code Snippet


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Nov 23, 2007

Hi.
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well i am learning to create a small software and have come up with four tables which are as follows;


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date
<!--[if !vml]--><!--[endif]-->client_id
name
address
contact_num

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client_id
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meas_neck
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