Help! Can't Find The Relationships
Mar 20, 2007
I'm using SQL Express with the Management Studio. I create a database diagram, and add a relationship. The relationship is shown in the diagram, but if I right-click it, I only get the option to delete it, I can't see it's properties.
When I go thru the nodes for all the objects in the Object Explorer where I think I should be able to find this relationship, I can't find it???
I look in Triggers/Constraints both for the database as a whole and for the individual participating tables but I can't see the relationship anywhere.
What am I doing wrong? Where should I be looking?
View 2 Replies
ADVERTISEMENT
Jan 12, 2005
I have a table with several foreign key relationships. I am scripting with PHP and was wondering if anyone knows how to query the database to show the relationships that a table has. I have been using MySQL, but for a number of projects have to use MS SQL.
Any help will be greatly appreciated.
View 2 Replies
View Related
Sep 20, 2007
I'm using Management Studio Express, is there a way to find out what relationships of a database have cascade delete set to true?
Also is there a way to change the settings (properties) of a relattionship without having to delete it and add it back?
View 1 Replies
View Related
Apr 18, 2008
Greetings,
I'm trying to come up with a way (efficiency isn't the most important thing here) ..to show how a person is related to another person on my website. The table structure is like so (simplified)
ID | UserName| FriendName
1 | Danny | Mike2 | Mike | Danny3 | Steve | Jason4 | Jason | Steve5 | Steve Danny6 | Danny | Steve
There are 2 rows each for every 'relationship' - I chose this design to simplify queries like "give me all of danny's friends" etc.
With this stucture, I want to be able to display to a user how they are "related" to someone that they may not necessarily be friends with. For example, lets say you are logged in as "Jason" and you are looking at "Dannys" homepage.
You are not Danny's friend..but you are related to him through Steve (because you are a friend of steve, and steve is a friend of jason)
I'm stumped trying to come up with a decent way to get this type of information..either in a sproc...or doing it in the business layer (c#). I think recursion is the way to go, and I could limit it to 4,5,6 levels whatever... again, efficiency isn't an issue here...I just want to somehow pull the data cleanly.
Any ideas?
View 5 Replies
View Related
May 29, 2007
Ok, so I open up a book on beginning sql and it discusses relationships.There is something that appears wrong. I am not understanding how the book is describing the one to one relationship. In it's figure, it shows that the same agency can have two different artist id's. But according to it's definition of one to one list can be related from both tables.Can someone explain this further please?Thanks in advance.
View 3 Replies
View Related
Aug 8, 2007
How do you show many to many relationships in ASP.NET with datasources?
I can retrieve the information from the database easily but I can't manage to save that information into a variable so that i can then call for only information in the M2M table related to the ID Key I want. For example..1 <asp:Label ID="lblTestLabel" Text='<%# DataBinder.Eval(Container.DataItem, "title_id") %>' Runat="server" />
2
3 <script language="VB" runat="server">
4 sub Page_Load(sender as Object, e as EventArgs)
5 Dim lblTitleID As Label = Repeater1.FindControl("lblTestLabel")
6 Response.Write(lblTitleID.text)
7 End Sub
8 </script>
When I try to run this script it dosn't work and I get the error:
System.NullReferenceException: Object reference not set to an instance of an object.
For line 6 of the code above. Is there a way to just retrieve information from a datasource without storing information into a label first?
PS: I use sqldatasource tags to retrieve information like:1 <asp:SqlDataSource ID="DataSet1" runat="server"
2 ConnectionString="Driver={MySQL ODBC 3.51 Driver};server=localhost;database=;user=;pwd=;option=3;"
3 ProviderName="System.Data.Odbc"
4 SelectCommand="Select * from titles order by title_id">
5 </asp:SqlDataSource>
View 2 Replies
View Related
Aug 10, 2007
Can someone help me sort something out. Suppose we have two tables in a database.One is named Person, and one is named Birthday. Is this a many to many relationshipor a 1 to many relationship?
Person has many birthdays. Example. Joe Schmoe has a birthday for every year of his life. birthday(7/11/1976) has many People (Many people have a birthday on 7/11/1976.
View 6 Replies
View Related
Feb 2, 2004
Is there any easy way of getting all the relationships for the tables in aSQL server db? I've looked through Google and the Books online but I'm barely scratching the surface on the systables. I know I can go to each individual table and get the dependencies or even print out the diagram through Enterprise Manager but I really don't want to have to type out all the primary/foreign keys for 100+ tables. Any help on getting this data either through a 3rd party software or querying the systables would be great.
THT
DMW
View 5 Replies
View Related
Mar 21, 2001
We have a table with approximately 150 colums and 2/3 of them are bit datatypes. We do not expect much activity on this table. Does it make sense to separate it into a few tables instead of 1 with one-to-one relationships? Will the join(s) significantly slow down our web application? Thank you
View 2 Replies
View Related
Aug 6, 2004
My hosting servers have "myLittleAdmin" installed. I am new to ms sql I have some experience with Access but I have never set up Relationships inside the database server. I have always just relied on my application logic to call the relations. What is the benefit to setting up relationships in sql, if any?
View 4 Replies
View Related
Nov 11, 2004
Is there a tool in Enterprise manager to list out the one to many & many relationships with a database?????:?:
View 4 Replies
View Related
Feb 1, 2007
Hey, I have SQL Sever Enterpise Manager. I am new at this company and I need to know the relationships between ALL the tables. Is there anywhere I can go to view all the primary keys and the relationships?
View 3 Replies
View Related
Jun 1, 2007
I am viewing tables in the ‘object explorer’- I can see the tables. If I open it up I can see columns, keys, constraints etc…
So I can see they key… can I tell which table/field the foreign key is connected to?
thanks
View 10 Replies
View Related
Oct 17, 2007
Hello,
I have 3 tables. Posts, PostsTags and Tags.
This is a many to many relationship.
So PostsTags has the following columns:
PostId (PK) and TagId (PK)
I always did that way in SQL 2005.
In some examples I see PostsTags have 3 columns:
PostTagId(PK), PostId (FK), TagId (FK)
Should I use it this way, instead?
Thanks,
Miguel
View 8 Replies
View Related
Jul 13, 2006
Is it possible to have 2 different databases and create relationships inbetween the two? I am thinking about way down the road and the size of the databases and I believe that I need to split my data into multiple databases to keep from running into the size limitations.
Davids Learning
View 1 Replies
View Related
May 29, 2007
Ok, so I open up a book on beginning sql and it discusses relationships.
There is something that appears wrong. I am not understanding how the book is describing the one to one relationship. In it's figure, it shows that the same agency can have two different artist id's. But according to it's definition of one to one list can be related from both tables.
http://foo.gearsector.com/foo/instr_scrns/oneToMany.gif
Can someone explain this further please?
Thanks in advance.
View 5 Replies
View Related
Apr 1, 2008
How can I use with relationShips in SQl?
Tamir BLoch .
View 1 Replies
View Related
Apr 3, 2007
Hello!
I have a really small database in terms of number of objects, but very big in terms of data (possibly millions of records). I always try to design my databases to be in the 3rd normal form (at least I hope they are!), but sometimes (for databases consisting of just a few tables) maintaining M:N relationships looks like an over-bloated approach to me... Let's see an actual example. I have a table like this:
Code SnippetCreate table [Airfares]
(
[OriginCity] Char(3) NOT NULL,
[DestCity] Char(3) NOT NULL,
[FareDate] Datetime Default getdate() NOT NULL,
[Price] Decimal(9,2) Default 0 NOT NULL,
[PriceChange] Decimal(9,2) Default 0 NOT NULL,
[Wrong] Bit Default 0 NOT NULL,
Primary Key ([OriginCity],[DestCity],[FareDate])
)
go
Now, at first there also was an Airline nvarchar(50) field, which stored the airline name. But now the client requested to store fares for a few airlines if it's the same price and city pair. This way we can have 3 airlines offering the same price on the same itinerary for example. So I added a dictionary table called Airlines:
Code SnippetCreate table [Airlines]
(
[AirlineCode] Char(2) NOT NULL,
[Name] Nvarchar(50) NOT NULL,
Primary Key ([AirlineCode])
)
go
Now, there are two things I can do. We are obviously dealing with the M:N relationship type here. I can either add another nvarchar column in the first table, like Airlines nvarchar(255) and store something like 'AA,AB,AC' there - those would be airline codes. OR I could do it the proper way and create a cross-reference table which will connect both Airfares and Airlines tables (this will store as many records as there are airlines for that particular itinerary, offerring the same price):
Code SnippetCreate table [AirfareAirlines]
(
[AirlineCode] Char(2) NOT NULL,
[OriginCity] Char(3) NOT NULL,
[DestCity] Char(3) NOT NULL,
[FareDate] Datetime Default getdate() NOT NULL,
Primary Key ([AirlineCode],[OriginCity],[DestCity],[FareDate])
)
go
But this is starting to look overly complicated, isn't it? The pros of this are I'm going to get real relationships, referential integrity, etc., but cons are more difficult code to query all this. What would you do? Do we really need referential integrity everywhere? Are there times when we're better not using relationships? I have seen many programmers skip referential integrity before, which always made me think they are missing something important in a Relational Database Management System.
View 13 Replies
View Related
Feb 13, 2008
Hi
How I can get to see the relationships, like in access, in sql 2005?
Thank,
K
View 1 Replies
View Related
Mar 16, 2008
Ok - I am still a bit weak on SQL. My understanding of FK relationships in a database are to reinforce the data integrity - Correct? For example, does it make sure that the id given for SiteID does indeed exists. Can it link tables like JOIN in select statements? If not, is there any gains by creating them, such as performance?
View 1 Replies
View Related
Feb 15, 2004
I'm having some trouble working out how to query some data. Rather than explain up front, here's some examples of what I want to achieve:
*******************************************************
I've got a structure which looks vaguely like this:
[ANCESTORS]
Grandparent
Parent
Child
If limit by grandparents, then I only get the lineage for that particular grandparent. I.e.:
SELECT *
FROM [ANCESTORS]
( some sort of joins here )
Where Grandparent.Name = 'Cybill'
This would return all of the children of 'Cybill' and their children. Now, if I use the following query:
SELECT *
FROM [ANCESTORS]
( some sort of joins here )
Where Child.Name = 'Jean'
This would return Jean's parents + the parents of Jean's parents (Jean's grandparents).
Likewise, if I enter:
SELECT *
FROM [ANCESTORS]
( some sort of joins here )
Where Parent.Name = 'Ron'
Then I would get Ron's parents and also his children.
*******************************************************
So, as you can see, at first it appears that I'm after a LEFT JOIN - meaning that the grandparents don't need to have child records to be returned, but, then it turns out that I need INNER JOINS - to limit grandparents when I choose children.
Can anybody see my dilemma here?
Mark-up ASP.net posts here
MarkItUp.com
View 10 Replies
View Related
Nov 27, 2005
Hi
I am using the Web Matrix Project to write a .NET
application. I have set up a database using MSDE which I
accessed through the Web Matrix Project to start with. I have now
found the Web Data Administrator which I use to backup my database and
help to transfer it to the Server where I hope to run this application
(if I ever get it finished!).
I need to set up some relationships between database tables but cannot
see a way to do this. SQL Server Books on Line referes to
Enterprise Manager which I believe ships with the full MS SQL Server
package (and costs a package). I am doing this on a
shoe-string. Any ideas on how to do it?
Thanks in advance.
Mike
View 2 Replies
View Related
Sep 11, 2003
I wanted to know that whether using relatioships betwenn tables improves performace for select queries?
what is the significance of using joins in queries after implementing relationships?
thanks
View 4 Replies
View Related
Aug 22, 2006
While playing about with SQL Server 2005 I am sure that I saw a tool to do relationships the same was as in access - however now I can't find it.
Am I seeeing things or does this really exist?
View 2 Replies
View Related
Sep 23, 2005
Hi, sorry if this comes across as a stupid question, but i'm new to SQL. I have had a look on Google and on these forums but not found the answer..
I am running MS SQL 7 with a database containing around 130 tables.. i want to know if there is a query/command that i can type that will look through all the tables and tell me which ones reference a specified table (through it's key). Hope this makes sense! i've looked at some of the stored procedures but not found any that give me anything useful.
EDIT: Just so you are aware, i did not create this database, hence why i am not aware of the relationships myself, i have only just started working on it.
Thanks
Steve
View 2 Replies
View Related
Dec 14, 2006
I'm upgrading my sites forum to a newer version. I've tried, unsuccessfully so far, to transfer member details, threads and posts to the new format. I say unsuccessfully but I have made it work once by deleting the Index's and Relationships on tables and re-entering them after transfer but his ended up screwing with the regestration of new members.
Before I become more frustrated than I already am, could I run something by you guys with the experience you have.
If I delete the Rels and Indx's again, then move all my tables over and then run this code through my browser, will the Indexs and Relationships find their way back to the right place?
Part 1
Code:
strSQL = "CREATE INDEX [Ban_ID] ON [" & strDBO & "].[" & strDbTable & "BanList]([Ban_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE UNIQUE INDEX [Cat_ID] ON [" & strDBO & "].[" & strDbTable & "Category]([Cat_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Group_ID] ON [" & strDBO & "].[" & strDbTable & "Group]([Group_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Poll_ID] ON [" & strDBO & "].[" & strDbTable & "Poll]([Poll_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Author_ID] ON [" & strDBO & "].[" & strDbTable & "Author]([Author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Group_ID] ON [" & strDBO & "].[" & strDbTable & "Author]([Group_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Group" & strDbTable & "Author] ON [" & strDBO & "].[" & strDbTable & "Author]([Group_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE UNIQUE INDEX [User_code] ON [" & strDBO & "].[" & strDbTable & "Author]([User_code]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE UNIQUE INDEX [Username] ON [" & strDBO & "].[" & strDbTable & "Author]([Username]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Cat_ID] ON [" & strDBO & "].[" & strDbTable & "Forum]([Cat_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Sub_ID] ON [" & strDBO & "].[" & strDbTable & "Forum]([Sub_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Last_post_author_ID] ON [" & strDBO & "].[" & strDbTable & "Forum]([Last_post_author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Categories" & strDbTable & "Forum] ON [" & strDBO & "].[" & strDbTable & "Forum]([Cat_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Choice_ID] ON [" & strDBO & "].[" & strDbTable & "PollChoice]([Choice_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Poll_ID] ON [" & strDBO & "].[" & strDbTable & "PollChoice]([Poll_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Polls" & strDbTable & "PollChoice] ON [" & strDBO & "].[" & strDbTable & "PollChoice]([Poll_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Address_ID] ON [" & strDBO & "].[" & strDbTable & "BuddyList]([Address_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Author_ID] ON [" & strDBO & "].[" & strDbTable & "BuddyList]([Buddy_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Buddy_ID] ON [" & strDBO & "].[" & strDbTable & "BuddyList]([Author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Author" & strDbTable & "BuddyList] ON [" & strDBO & "].[" & strDbTable & "BuddyList]([Buddy_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Author_ID] ON [" & strDBO & "].[" & strDbTable & "EmailNotify]([Author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Forum_ID] ON [" & strDBO & "].[" & strDbTable & "EmailNotify]([Forum_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Author" & strDbTable & "TopicWatch] ON [" & strDBO & "].[" & strDbTable & "EmailNotify]([Author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Toipc_ID] ON [" & strDBO & "].[" & strDbTable & "EmailNotify]([Topic_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Watch_ID] ON [" & strDBO & "].[" & strDbTable & "EmailNotify]([Watch_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Auhor_ID] ON [" & strDBO & "].[" & strDbTable & "PMMessage]([Author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [From_ID] ON [" & strDBO & "].[" & strDbTable & "PMMessage]([From_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Message_ID] ON [" & strDBO & "].[" & strDbTable & "PMMessage]([PM_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Author" & strDbTable & "PMMessage] ON [" & strDBO & "].[" & strDbTable & "PMMessage]([From_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Forum_ID] ON [" & strDBO & "].[" & strDbTable & "Permissions]([Forum_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Forum" & strDbTable & "Permissions] ON [" & strDBO & "].[" & strDbTable & "Permissions]([Forum_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Group_ID] ON [" & strDBO & "].[" & strDbTable & "Permissions]([Group_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Forum_ID] ON [" & strDBO & "].[" & strDbTable & "Topic]([Forum_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Poll_ID] ON [" & strDBO & "].[" & strDbTable & "Topic]([Poll_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Start_Thread_ID] ON [" & strDBO & "].[" & strDbTable & "Topic]([Start_Thread_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Last_Thread_ID] ON [" & strDBO & "].[" & strDbTable & "Topic]([Last_Thread_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Moved_ID] ON [" & strDBO & "].[" & strDbTable & "Topic]([Moved_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Forum" & strDbTable & "Topic] ON [" & strDBO & "].[" & strDbTable & "Topic]([Forum_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Topic_ID] ON [" & strDBO & "].[" & strDbTable & "Topic]([Topic_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Message_date] ON [" & strDBO & "].[" & strDbTable & "Thread]([Message_date]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Message_ID] ON [" & strDBO & "].[" & strDbTable & "Thread]([Thread_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Author" & strDbTable & "Thread] ON [" & strDBO & "].[" & strDbTable & "Thread]([Author_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Topic" & strDbTable & "Thread] ON [" & strDBO & "].[" & strDbTable & "Thread]([Topic_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Topic_ID] ON [" & strDBO & "].[" & strDbTable & "Thread]([Topic_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Guest_ID] ON [" & strDBO & "].[" & strDbTable & "GuestName]([Guest_ID]) ON [PRIMARY] "
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [" & strDbTable & "Thread" & strDbTable & "GuestName] ON [" & strDBO & "].[" & strDbTable & "GuestName]([Thread_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE INDEX [Thread_ID] ON [" & strDBO & "].[" & strDbTable & "GuestName]([Thread_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
strSQL = "CREATE UNIQUE INDEX [Session_ID] ON [" & strDBO & "].[" & strDbTable & "Session]([Session_ID]) ON [PRIMARY]"
'Write to the database
adoCon.Execute(strSQL)
'If an error has occured write an error to the page
If Err.Number <> 0 Then
Response.Write("<br />Error Creating one or more Indexs <br />" & Err.description & "<br /><br />")
'Reset error object
Err.Number = 0
'Set the error boolean to True
blnErrorOccured = True
End If
View 1 Replies
View Related
Dec 14, 2004
Is there a way to create a supertype/subtype table in sql server 2000 or is supertype/subtype an abstract idea rather than an option on creating a table?
i would like to set up a supertype table:
person
personid
firstname
lastname
and two subtype tables:
employee
id
personId
ss#
customer
id
personId
someOtherInfo
how do i set this up so that I cant have the same personid in employee and customer. How do i make sure that the personid is in either one or the other.
thanks
View 1 Replies
View Related
Jun 5, 2006
I am starting a new project and somebody told me at work that if I create relationships (foreign keys) between my tables, it makes the database slower, the best way is to "link" the tables using sql instructions like inner/outer join.
Is that true?
Thanks in advance,
venusgirl
View 10 Replies
View Related
Sep 12, 2007
I have an asset schema problem which I'm not too sure how to resolve....
I have an asset table which stores values common to all asset types. I have created seperate asset type tables(VehicleAssetDetail, PropertyAssetDetail, InvestmentAssetDetail) to store their specific details.
This in turn creates 1:1 relationships between "Asset" table and the respective detail tables.
If I were to store all the details in the "Asset" table it would cause a lot of redundancy bearing in my mind there are about four other asset type details I have excluded from the schema.
Are the 1:1 relationships bad? If they are, how do I resolve them without throwing all the columns from the asset details tables into the Asset table?
Attached is a 15Kb gif image of the schema. I'd really appreciate any help with this... :)
Thanks.
View 3 Replies
View Related
May 11, 2004
Hello, everyone:
I have attached a new database from customer, and wanted to check the existing relationships. How to display these relationships? Thanks.
ZYT
View 2 Replies
View Related
May 24, 2004
While in the design window of a table, I click the properties button and click the Relationships tab. Here everything is grayed out, and I can't drag and drop to create relationships in my Diagram either. Its like things are locked up right now. Can any of you give me some direction? thanks
View 1 Replies
View Related
May 16, 2008
Hi, I'm slightly familiar with using access to do databasing, but I am now working with sql server and visual studio 2008 programming in vb.
This is probably very simple, but I am trying to call a table from a dataset into a datagrid, but the information in the table needs to be relative. This is why I need to create a relationship, however I am unsure how to. I'm not sure if this is done within the sql server or within vs2008 in vb? The tables I am trying to relate are Financial and Demographics with the PK and FK being Patient ID. Can someone please point me to an example or give me a simple one that will explain how I can do this?
Thanks!
View 4 Replies
View Related
Feb 24, 2008
Hello
I have created the following tables in SQL 2005.
English(engcode,engword)
Esperanto(espcode,espword)
french(frcode,frword)
eng-esp(engcode,espcode)
esp-fr(espcode[/u],frcode[/u])
The underline code are primary keys.
and i need to create a relationship between them. The problem is that the icon "Relationship" is disable.. I have searched a lot how enable this function but in vain.. Any1 have the solution???
View 1 Replies
View Related
