Table Relations
Mar 26, 2008
I'm looking for some input about how I should setup my database tables.
Here's the setup - There are several Report Forms that users can fill out and each one has its own table (I'll use Report1 and Report2 for examples). There are several other tables that relate to these Report tables, for example, a table named Pictures. If a user is filling out Report1 or 2, they could add a picture to it. The picture information is stored in the Picture table, along with the ReportID of the report it belongs to.
Report1 (table)
intReportID (pk)
vcFirstName
etc...
Report2 (table)
intReportID (pk)
vcFirstName
etc...
Pictures (table)
intPictureID (pk)
intReportID (fk - to match ReportID in appropriate Report table - not being allowed...)
vcFilePath
etc...
Right now, I've two relationships setup for the pictures table - one with the picture table ReportID as a FK to the Report1 table's ReportID PK, and another setup the same way, but for Report2.
It's not letting me do this because it's looking for a matching ReportID in both the Report1 and Report2 tables for each entry in the Pictures table. A match will only ever exist for one or the other, never both.
In addition to Pictures, I have about 9 other tables that work the same way. I also have about 7 Report tables total. I'd really like to set something up so if I delete a record from a report table, it will delete all matching entries from the other tables. Does anyone know how I can go about setting this up?
Thanks very much!
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Jun 13, 2005
Code:
TBL1
ID User
1 Tom
2 Alice
3 Alex
4 Melissa
5 Carl
Code:
TBL2
ID User WebSite
1 Tom http://www.Tom.com
2 Alice http://www.Alice.com
3 Alex http://www.Alex.com
4 Carl http://www.Carl.com
I want to join tables above in only one query.
I tried something I couldn't.
there are 5 users in TBL1
TBL2 is for their web sites records.
But while tom,alice,alex and carl have web site,Melissa hasn't.
I want to print like below
Code:
Tom http://www.Tom.com
Alice http://www.Alice.com
Alex http://www.Alex.com
Melissa
Carl http://www.Carl.com
my tests, although users who have web site were printed, Melissa wasn't printed.
Although she hasnot a website, I want to get her , too.
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Jan 9, 2008
hello,
i started making my database some time ago, and therewith i maked some relations between my tables
at the beginning, at Tables, at the UserId row, i had uniqueidentifier. and because i had some difficulties when trying to get the username who corresponds with that uniqueidentifiers i've discarded that and replacing the uniqueidentifier with varchar(255) where i am writing dirrectcly User.Identity.Name.
Because of that, i had to delete some of the tables relations, because i can make relations only by unique variables (witch in fact are unique but database can't know that)
What i should do now? remake the tables with UserId as uniqueidentifer or i should let it so without no relations between them? (witch i don't think is good)
thanks
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May 27, 2004
Hi,
we have a problem with "one-to-many relations between fact table and dimension table". Take the example of table "LOGGEDFLAW" which is related one-to-many to the table "LOGGEDREASON. "LOGGEDFLAW" includes the column "FLAWKEY" and "LOGGEDREASON" includes the column "REASONKEY" and essentiallay the column "FLAWKEY" as foreign key. Now assume that we have the following records in there:
LOGGEDFLAW
1) FLAW1
2) FLAW2
LOGGEDREASON
1) REASON1,FLAW1
2) REASON2,FLAW1
3) REASON3,FLAW2
Now assume, that "LOGGEDFLAW" is the facttable and "FLAWCOUNT" is the measure with the source column "FLAWKEY" in which we want to count the number of FLAWs. As you see in the example the number of FLAWs is 1 for "FLAW1" and "FLAW2". Microsoft Analysis Server generates the value of 2 for the number of FLAWs "FLAW1" because of the one-to-many relationship to the table "LOGGEDREASON". In the attached ZIP File you find :
- a MDB File with the described example
- a screenshot from the cube constructed in AS
- a screenshot from the result table generated with AS.
The question: How is it possible to calculate the measure "FLAWCOUNT" correctly, ignoring the records generated by the one-to-many relationship?
Best regards,
Thorsten
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Dec 16, 2006
Hi,How to get list of all relations of certein database's table?
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Feb 28, 2007
I have a table tblFriends:UserCodeOwner FriendCode5 545 1235 4785 49054 5123 5478 5478 500490 5490 500500 478500 490500 600600 500As you can see I store each relation twice, i've done that because now I can create a clustered index on UserCodeOwner for faster searching.What I want is the following:I want to count how many steps it takes to get from one user to another via their relations and also via which usercode it goes.so: from 5 to 123 is one step.5-123from 5 to 500 is 2 steps via either 478 or 490I want to get a result like this:5-478-500and5-490-500from 5 to 600 is 3 steps:5-478-500-6005-490-500-600Does anyone have a good start for me on how im able to return such results and how I can search through the table most effecively?
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Mar 18, 2004
.
Hi,
How can I make relations between two tables using query? Tables are already there with data.
Regards
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Feb 22, 2008
Is there a fast way to see, which relations a table has for his PK?
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Aug 21, 2004
I am using MSDE Manager for my database, and I was wondering, if data is entered on one table, IE UserID, shouldnt that same userID pop up in the related column on the foreign table as well?
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Jun 14, 2007
Maybe a stupid question but...
is it posible to add relations in sql compact databases (.sdf) ?
I tried in server explorer (in orcas) and there is no option for relations. Also .sdf file cannot be opened in SQL Server Express Management Studio SP2 because is version 3.5.
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Aug 28, 2007
Hi There,Im trying to display a list of results and have extra information pulled from another table. Please read on as this isnt what you think, just hard to explain but I will try.In Table 1 I have a set of Orders, example data below.Order 1, Line 1Order 1, Line 2Order 1, Line 3Now I have another table to record what lines a user would like to monitor, for this example the user will monitor these lines.Line 1Line 2but not Line 3I need to display a single grid view using the least amount of queries possible to diplay the following resultOrder 1, Line 1, MonitoredOrder 1, Line 2, MonitoredOrder 1, Line 3, NOT MonitoredI have tried viewed, but with the relationships it only displayes what is avialable in both tables, I have also thought about using a DataSet relationship with two queries through the code, but am really wondering if anybody knows of a simple and low overhead way of producing this result? Mayby stored procedures?Kind Regards,Gareth
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Aug 9, 2000
Hayyy
I have just made a database with 3 tables, they are now connectet with relationships.
My problem is when I write my select statement:
select * from table1 a, table2 b where a.ID=2.
I will get all the ´records from both the tables, I just want One record. Then I addes some too my select statement so it now looks like this:
select * from table1 a, table b where a.ID=2 AND a.No=b.No
Now I got the right result, but if this is the only way to do it, there is no recent to make all the relations i the DB between the tables.
Thank You... Jonas
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May 4, 2004
Hi,
I build a local cube from a relation database. In the database there are 1:n relations.
Is there a way to handle 1:n relations?
For example:
I have a table LOGGEDFLAW and a table LOGGEDREASON with a 1:n relation between them. We create a select statement of these tables and as an result we get duplicate records of LOGGEDFLAW each time more than 1 record of LOGGEDREASON are associated to 1 record of LOGGEDFLAW - this is the standard result I get with an relational JOIN operation. Now I want to count the LOGGEDFLAWs without the duplicates generated by the 1:n relationship.
Best regards,
Thorsten
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May 23, 2006
Dim verilaDataAdapter1 As SqlCeDataAdapter
Dim verilaDataAdapter2 As SqlCeDataAdapter
Dim iliski As DataRelation
Dim Sorgu1 As String
Dim Sorgu2 As String
Dim A1Dataset As DataSet
Dim parametre1 As SqlCeParameter
Dim parametre2 As SqlCeParameter
Dim ssceconn As New SqlCeConnection("Data Source =Program FilesAtisoftDAatisoft.sdf")
ssceconn.Open()
Dim sqlInsertRow As SqlCeCommand = ssceconn.CreateCommand()
Sorgu1 = "SELECT * FROM StokKartTbl WHERE StokGrupKodu like @StokGrupKodu Order By Stokismi ASC;"
Sorgu2 = "SELECT * FROM SarzKartTbl WHERE SarzID like @Sarzid"
A1Dataset = New DataSet
verilaDataAdapter1 = New SqlCeDataAdapter(Sorgu1, ssceconn) 'StokkartTbl
parametre1 = New SqlCeParameter("@StokGrupKodu", SqlDbType.NText, 25)
parametre1.Value = Trim(Mid(CBStGrupAciklama.Text, 1, 6)) + "%"
verilaDataAdapter1.SelectCommand.Parameters.Add(parametre1)
verilaDataAdapter1.Fill(A1Dataset, "StokKartTbl")
verilaDataAdapter2 = New SqlCeDataAdapter(Sorgu2, ssceconn) 'SarzKartTbl
parametre2 = New SqlCeParameter("@Sarzid", SqlDbType.NText, 50)
parametre2.Value = Trim(Mid(CBSarzID.Text, 1, 25)) + "%"
verilaDataAdapter2.SelectCommand.Parameters.Add(parametre2)
verilaDataAdapter2.Fill(A1Dataset, "SarzKartTbl")
Dim p As DataColumn
Dim c As DataColumn
p = A1Dataset.Tables("StokKartTbl").Columns("StokID")
c = A1Dataset.Tables("SarzKartTbl").Columns("StokID")
iliski = New DataRelation("Elemanlar", p, c)
A1Dataset.Relations.Add(iliski)
DataGridStokKartTbl.DataSource = A1Dataset.Tables("StokKartTbl")
'Error
System.ArgumentException was unhandled
Message="Hata iletisi içeren isteğe bağlı bir kaynak derlemesi bulunamadığından bir hata iletisi görüntülenemiyor"
StackTrace:
System.Data.ConstraintCollection.AddForeignKeyConstraint()
System.Data.ConstraintCollection.Add()
System.Data.ConstraintCollection.Add()
at DataSetRelationCollection.AddCore()
System.Data.DataRelationCollection.Add()
AtisoftDA.siparis.Button2_Click()
System.Windows.Forms.Control.OnClick()
System.Windows.Forms.Button.OnClick()
System.Windows.Forms.ButtonBase.WnProc()
System.Windows.Forms.Control._InternalWnProc()
Microsoft.AGL.Forms.EVL.EnterMainLoop()
System.Windows.Forms.Application.Run()
AtisoftDA.siparis.Main()
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Aug 26, 2007
HI Everyone.
how i can get the related tables.
my problem as example
i have a table name TT have relation with two table the first one TT1 and second TT2
i want to get the name of two table TT1 and TT2 by select statement.
thanks alot.
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Jan 26, 2006
If I created relation between 2 tables without any constarins what will be the value of this relation or when SQL Server will use this relation
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Oct 11, 2006
Why DataAdapter does NOT load relations from DB ?the relations are made using SQL SERVER MANAGEMENTbut when a fill a datatable using dataadapter the relations are not loaded .why ? what is the solution to this problem ?
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Dec 21, 2003
i want to write program that will return
the relations between the tables and its type (one to many,.....etc)
any help
Thanks in advance
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Feb 27, 2006
Are there tools for SQL2k database that take a database return allrelations of tables.thanks.Stefano.
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Sep 19, 2000
Hi,
I have a doubt, can anyone please clarify me.
I have created the following table,
create table z
(
eno int,
deptno char(2),
ename varchar(5),
constraint pk_eno_deptno primary Key(eno,deptno)
)
and I tried to establish a foreign key based on the above defined table. It's giving error,
create table z_dup
(
eno int FOREIGN KEY REFERENCES z(eno),
deptno char(2)
)
go
Error:-
*****
There are no primary or candidate keys in the referenced table 'z' that match the referencing column list in the foreign key 'FK__z_dup__eno__18CE1BA6'.Could not create constraint. See previous errors.
Even I tried to create a foreign key like the following,
create table z_dup
(
eno int FOREIGN KEY REFERENCES z(eno,deptno),
deptno char(2)
)
go
Error:-
********
More than one key specified in column level FOREIGN KEY constraint, table 'z_dup'.
Can anyone please help me to create a foreign key relation with the base table.
tks in advance,
Srinivasan
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Jan 30, 2007
I have to synchronize 2 databases hourly but am having difficulty maintaining foreign key relations. These tables use auto-increment columns as primary keys, with child records in other tables related with foreign keys. I can't change the way the local software uses primary or foreign keys as it is hardcoded in the local app. (microsoft retail management system)..(however the web-remote app is easily customized). I am using CDB synchronizer to sync the two databases because the remote one is mysql.
Example tables layout:
Items table has auto-increment primary key 'id'
TransactionEntry table has its own auto-increment primary key 'id' and a foreign key 'item_id'
Example of how remote and local database foreign key relations are incorrect after sync using CDB synchronizer:
8:00am -first installation of database-'item' tables auto-increment 'id' columns match with id last record value of '6'
locally the following products are added:
11001 short sleeve t---gets added with primary key in 'item' table 'id' of '7'
11002 long sleeve t----gets added with primary key in 'item' table 'id' '8'
remotely the following products are added:
21001 hipster jeans- --gets added with primary key in 'item' table 'id' of '7'
31001 overalls---gets added with primary key in 'item' table 'id' '8'
remotely someone orders 21001..so TransactionEntry table records sale of "item_id" of '7', but after synch with our local server,
product with "item_id" of '7' is "short sleeve t".
9:00 -synch takes place...item_id foreign key isn't accurate because of independent auto-increment values..
whenever a product is ordered, the TransactionEntry table will record the product's ID column thats available in it's own local copy... after synch, the 'item_id' field will not match the 'Item' table id field and the data about the transaction's product is lost.
I have read of solutions involving staging/temporary tables to cascade update foreign keys before synching into main database, but hopefully there is a more elegant solution for this. If this is only way, will it be reliable? foreign key mix-match seems like could cause havoc.
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May 4, 2004
Hi all,
I have a big problem. I have many tables with constraints, with foreign keys. I need to create a ordered list of tables, on the top must be the basic table what has no parents, then the second level tables (those depends on the first level) the the names of third level etc.
for example:
Table A[id]
Table B[id, idc]
Table C[id, ida]
Table D[id, ida]
Table E[id, idc]
I tried it by using information_scheme but I was unsuccesfull.
The result should be:
A
C
D
B
E
Thank you,
Tom.
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Jul 20, 2005
i've a database where relations are hold in a special way which the projectleaders think of as "performant and uncomplicated" but which is veryquestionable to me:------------------------------------------------Table [Attributes]Fields [AttributeID] and [AttributeText]Table [Objects]Fields object stuff.... and [AttributeIDs] (varchar with 0-20 ids usually)in AttributeIDs there is a backslash separted list of Attribute-IDs like'3412278'so to get 20 object with a special attribute (which we need often) we doSELECT TOP 20 *FROM ObjectsINNER JOIN AttributesON (Objects.AttributeIDs LIKE ('%' + (CAST AttributeID AS varchar) + '\%'))ORDER BY ObjectTextps: to store data we need for communication we include a dozen of fields in*every* table and its content makes about 100 bytes/record------------------------------------------------i would do this stuff with a table to store the object/attributecorrelations.could someone tell me if that stuff makes any sense to an expert and how tovaluate it in regard of performance(we have big customers where that *is* anissue), design, scalability, pragmatism and sense ;)thanks in advance,ViperDK
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Sep 21, 2006
Hi,
I've been trying to export a whole database from one server to another (connected through a local network) but the keys always get lost: when I open the diagrame I can actually see them just before the tables names appear. I've tried inserting the primary keys for each table manually with the export wizard, which took me some time, but no relations were exported. Any way of doing this automatically?
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Jul 19, 2005
Hi,after i exported my DataBase From my local computer to host, all tables and views have exported, but my tables Realations dosent exported and i have'not any realation in my database, i can't create new realation , when i want to do this i get an error:" You do not have sufficient privelege to create n new database diagram" What this mean??how i can export my database to my host whit my realations?plz help me i you can!thanks.
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Sep 1, 2015
Below I have a query which list the relations (constraints) between tables.
I want to list all the relations which are visible in the Database Diagrams.
The list is not complete. How do I get a complete list ?
--
-- Query to show the relations (constraints) between tables.
-- This does not show the complete list
--
SELECT A.constraint_name,
B.table_name AS Child,
C.table_name AS Parent,
[Code] ...
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Jul 20, 2005
HiI have to make export of SQL Server Database to MS Access and I havedone it with the tables but now I need to transfer(export) therelations, keys and indexes. Can any1 tell me how to read relations,keysand indexes from SQL Server and convert them to MS Access.(it seams thatfor creation of indexes in MS Access ADOX is the only way but ADOXcannot read all information about keys,indexes from SQL Server.)All I can see is that I have to use SQLDMO to enumarate allrealtion/keys/indexes from SQL Server database and use ADOX to createthis relations/keys/indexes in MS Access database, but I don't knowexact matching attributs of relations/keys/indexes from SQL to Access.Thanks
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Oct 7, 2006
Suppose I have a table with relations (REL). In this table there are relations between parent en child, so the columns are: Rel_Id, parent_Id, child_Id. Example:
1, A, B
2, A, C
3, A, D
4, B, E
5, C, F
6, G, H
7, G, I
8, H, J
I need a query which returns all relations from REL that are in the same tree as the input unit.
In the example, giving D as input unit, it should return relations 1, 2, 3, 4 and 5, because A, B, C, E and F are (in)directly related to D and belong therefore to the same tree.
Giving H as input, it should return relations 6, 7 and 8.
(with a tree, I mean that a parent can have 0, 1 or more children and a child belongs at most one parent.)
Thanks for your help in advance!
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Sep 24, 2015
I am having a requirement as below. I am having a Emp_Dim dimension table which is having a Manager_Key which is dependent on again on the Emp_Key. Based on the designation I have to create a Hierarchy. I have to create a Hierarchy with 10 levels according to the Designation.
While extracting data I am giving a particular Area manager id in Emp_Key I should get the accumulated data (His and the employees working under him as well). So it's like my MDX query should be like this if I am giving any emp_key then I need all the business done by under him.
My doubt is how I can establish the relations between the different levels in my Hierarchy. I am pretty new to SSAS.
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Aug 22, 2006
hi! I've been using sql server for a while but until recently have kept things pretty simple. now I'm trying to expand my horizons by trying to tackle some more complex applications, and one I'm really struggling with is nested relations. I hope this is in the right forum; if it is not, please feel free to move it, thank you!
here is my problem: I'm desigining a simple "Downloads" page in asp.net, and I have two tables set up. One is Downloads and the other is DownloadCategories. here is a simplified layout of the tables:
Downloads:
ID PK
Title
Description
CatID FK
DownloadCategories
ID PK
Name
Description
ParentID FK
basically CatID in downloads is a foreign key to the ID in downloadcategories, and ParentID is a foreign key to the ID in the same table, downloadcategories. This is set up because I want to support an infinite number of categories, each being able to support their own subcategories, which can go deeper into more subcats, and so on...
the problem is that I can't seem to get them to fill into the dataset I've created in vs 2005's designer. I have a procedure SelectAll which retrieves all rows, and SelectMain which retrieves only the topmost categories (where ParentID=Null). If I fill the datatable with SelectMain, I don't get any of the child categories, and if I call SelectAll, I get just a single table with all the rows, but no relations.
I have defined a relation in the datatable that mirrors that of the database, but no matter what I try, I cannot get it to show the relationship in the datatable when I fill it. am I doing something wrong? this is kind of how I have it setup:
dataset with Downloads and Categories datatables, relations from Categories to Downloads, and from Categories to Categories. I have the two queries added to the table adapter, and I call the SelectAll query to fill it, but all it does is fill the table with rows; it doesn't create any relations.
I hope this explanation of my problem makes sense. as I said I'm still very new to this complex stuff, and I'm hoping to get my head around it soon, because I really need the functionality (not to mention the skills!) so if you can take a moment to go over what I've explained and point out where my flaw might be, I would really appreciate it!!
if you need any more information to help, please let me know and i'll get right back to you. thanks a bunch!
-SelArom
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Feb 7, 2007
Hi all,
In my project i will have the data in a collection of objects, I need to update series of tables with foreign key relations
Right now my code looks like this
foreach(object obj in Objects){
int accountId=Account.Insert(obj.accountOpenDate,obj.accountName);//this will update the accounts table and returns account id which is a Identity column in Acccounts table
int DebtId=Debt.Insert(accountd,obj.debtamount,obj.debtbalance); this will update the Debts table and returns DebtId
///series of tables like above but all the relevant data comes from obj and in the Insert Methods i am using stored procedures to Insert the data into table
}
The no of objects varies from 1000 to 1 milliion,, with this approach its taking more time to update all the data. Please let me know if any alternative procedure to handle this kind of scenario.
Thanks
Regards
Prasad.
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Feb 23, 2008
hiiii all,
plz , I need help:
i want to know relations between tables stored in sql server database :
1-parent column.
2-parent table.
3-child coulmn.
4-child table.
using c# ado.
thanks.
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Feb 11, 2015
Why terms are not being corrected on a partial match? I thought this was the point of term based relation rules.
I am testing in an email address (nvarchar) field?
E.g. trying to correct @@ to @ and .con to .com (just to test)
And everything passes.
If I test with an entire value, the field is corrected.
E.g. 605688878@@qq.com corrects to 605688878@qq.com if I enter those exact values as term based relations.
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