Hello,
I've created a database in VS2005 for my mobile app, but I can't figure out how to establish the table relationships. I'm not new to databases, but I'm new to VS. Any help is appreciated.
Thanks,
I have spend days researching this and found others with the exact same
problem but there are no useful replies as people don't seem to
understand our problem. Please read this carefully...
What is the best way to create relationships between new SQL tables? For example, say I want to create a new database with tables for Customer, Orders and Details, how to I relate these tables?
- Edit via the Dataset designer in Visual Studio 2005?
- Use the Server Explorer's Table designer in Visual Studio? (not sure how to use the 'relationship' icon)
- Use SQL Server Managment Studio Express (SSMSE) Database Diagram
- Something else?
I am using Visual Studio 2005 Standard and SQL Server 2005 Express (SP1).
I created a new database in Visual Studio's Server Explorer and then used the Table Designer to create two new Tables (Customers and Orders). I then assigned primary keys but I don't know the best way to relate the tables.
If I create and edit a new dataset, I can graphically drag a relationship between the tables. HOWEVER, this relationship isn't recognized by SQL Server Management Studio Express (SSMSE). I found this out when I tried to create a database diagram, none of the relationships appear in SQL?! This would cause problems when I want to deploy the database to my client.
If however, I START in SSMSE and create the tables there, then open a Database Diagram in SSMSE and graphically link the tables, then Visual Studio will see all the relationships.
I thought it was supposed to be a seamless integration between Visual Studio 2005 and SQL Server 2005. Am I missing something?
Richard
hi,
View 1 Replies View RelatedI'm building an application that tracks courses and equivalent courses. For example, say I have course A which a user should get credit for if they have taken equivalent courses. So if a user has taken (course B or course C) AND (course D or course E) he should get credit for Course A. What's the best way to setup a SQL table to create these type of equivalent relationships?
View 9 Replies View RelatedHere is the alter statement that I am trying to use to create a relationship between 2 tables. This does not seem to work on mobile. What am I doing wrong?
ALTER TABLE [SubCategory] CONSTRAINT [FK_SubCategory_Category] FOREIGN KEY([CategoryID])
REFERENCES [Category] ([CategoryID])
ON UPDATE CASCADE
ON DELETE CASCADE
I have noticed that VS2005 create partial class for SQLCLR objects(Stored Procedure, UDF , ecc.)
Is this partial need ?
Here http://technet.microsoft.com/en-us/library/ms345135.aspx is shown an example that do not use partial attribute.
Many thanks
Claudio
Hi,
I was going to use Sql compact 2005 with vs2005 and use merge replication with MSDE2000. Unfortunately I found out this isnt possible (only possible if I use SQL Server 2000)
Has I can replicate with MSDE2000 with Sql CE 2.0 the question is:
Can I use sql ce 2.0 with vs2005 and windows CE 5???
Do I use the same System.Data.SqlServerCe assembly?
I hope someone can reply to this.
Thanks,
Luis
I am running VS2005 Pro edition. I have downloaded, but not installed, SQL Express with Advanced Services SP1. Can I install it over the VS2005 version of SQL Express or do I have to do some install work?
Also, regarding the Books Online July version, must I do a clean install or can I just install it over whatever came with VS2005?
Thanks
Hi, i'm looking for SQL CE 3.5 for Visual Studio 2005. I am currently using SQL CE 3.1 and wish to use the System.Transactions support which has been included in v3.5.
I know Orcas includes v3.5 but i need to continue using VS2005. Is there an installer or similair so i can develop applications with SQL CE 3.5 with my current development environment? I see there is a new SQL CE sync installer which includes the 3.5 runtime files, however ideally i would like the sdk so i can use the dataset designer. Is it possible?
Thanks
Hello I opened vs2005,new->project->analysis services project ,clicked OK, then dragged a data flow task from the toolbox to the area ,after I double clicked data flow task it gave me error message as shown in the link , what is wrong?
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F16 LÃ?GHTÃ?NÃ?NNNG
<edit> To remove the shouting </edit>
Hi, not sure I have should ask this in here or in the VS forums - but here goes anyway!
My vb app is written using VS2005 with an SQL database. I'm now distributing this to users to use with SQL Express.
It's hard enough explaining to them how to attach the database without going into the backup routines etc!
So what I'd like to do is to have a "backup" button in my app, that backsup the database, trancates the log files & then shrinks the files.
Is this possible?
I'm a newbie to both Windows Forms development and SQL Server CE, so please bear with me...
I am developing a vocabulary builder application, and my data keeps reverting to the data set I originally imported. I keep losing the records I've added using the application I'm developing, or from within VS2005. I know about the 'Copy To Output Directory' option in the Solution properties and I set this to 'Do not copy'.
What gives? Not sure what other information you might need, but I suspect it's something really basic...
Thanks!
When I try to add a new database to App_Data in a VS2005sp1 project I get "Failed to generate a user instance of SQL Server due to a failure in starting the process for the user interface".
I have SQL2005sp2 and SQL Express on the system, both services are running, and an instance of the latter called SQLExpress which I can use through SQL Server Management Studio. sp_configure user instances enabled is set to 1. The SQL Server Instance Name in Options | Database Tools | Data Connections is set to SQLExpress ...
I have no idea how to proceed .. any ideas anyone?
Thanks
John
Hi all,
I hope I am on a suitable thread. Sorry if I'm not. I just need to know if I need a license in order to write a commercial application using Visual Studio 2005. And, if so, is this license necessary to me as a developer or to my customer that will purchase the application at the end?
And something more. ASP.NET runs on IIS, which is shipped with Windows Server, correct? So, once my customer purchases Windows, he doesn't anything more in order to run a ASP.NET application (which will finally access the SQL Server DBMS). Is this correct?
Thanks in advance
Lambros
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 RelatedHow 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>
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.
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
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 RelatedMy 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 RelatedIs there a tool in Enterprise manager to list out the one to many & many relationships with a database?????:?:
View 4 Replies View RelatedHey, 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 RelatedI 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
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
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
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.
How can I use with relationShips in SQl?
Tamir BLoch .
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.
Can someone explain the generated sprocs of VS2005 if one column can be nullableDependentOfSeqID = @Original_DependentOfSeqID OR ((@IsNull_DependentOfSeqID = 1) AND (DependentOfSeqID IS NULL))In VS2003 the generated sprocs would beDependentOfSeqID = @Original_DependentOfSeqID OR ((@Original_DependentOfSeqID IS NULL) AND (DependentOfSeqID IS NULL))Which is the best?
View 1 Replies View RelatedI am busy with handling connecting to Sql2000,It said some error occured while connecting to SQL2005.
But actually i am using SQL2000.Can somebody give me a solution ?
By the way,I am a greenhand.
Hi Guys,Have a strange problem at the moment on a page I am working on. Basicly there are 2 SQLDataSource Objects and 2 GridViews(I will call them GV1 and GV2 and DS1 and DS2 (GV = GridView and DS=SQLDatasource if you didn't guess)). Right the problem.... DS2 and GV2 don't display anything yet the SQL being executed is more or less the same.SQL from DS1 is
Code:
Hi everyone,
I am attempting to drag the SQLDataSource control to my webpage to initiate a connection to my SQLServer Express instance on the same system. The control will drop correctly, but when I click on the "Configure Data Source" in the SQLDataSource Tasks popup panel, I get the following error message:
Following error occured while getting connection string information from configuration."Cannot get web application service"
It then sends me to the configure data source window where it asks me to choose my data connection. However, there is nothing in the pulldown, and the "New Connection" button does nothing.
I have the SSE data connection defined and visible in the Server Explorer, and there is a connection string defined in the web.config file that points to the server and database I wish to access.
I'm on day 2 of my excursions with VS2005 Pro, so I feel that I'm missing something huge, but otherwise obvious that's different in the configuration of VS2005 as opposed to VS2003, which I have no issues with.
Thanks!Chris
I am working on a windows application (C#) that utilizes ODBC to acces paradox tables (works fine thought this would be the problem database) and a WinMobile database(.sdf) in order to sync table records. What I need to do is copy the .sdf file from the winmobile device then access it with this application to check for changed records on the PC and in the mobile database then copy it back to the mobile device via RAPI.
The program compiles fine but when I try to run the application I get this error. Unable to load DLL 'sqlceme30.dll': The specified module could not be found. (Exception from HRESULT: 0x8007007E) .
I have already copied the System.Data.SqlServerCe.dll to my projects bin folder and then added a reference to it in the projects Reference dialog. These were also copied to the bin folder of the project
sqlceca30.dll
The SQL Server Mobile Client Agent. Required for applications that connect to SQL Server by using replication or remote data access.
sqlcecompact30.dll
Provides the compact database functionality. Required if your application will use compaction.
sqlceer30[language].dll
Contains error strings for SQL Server Mobile-generated errors. Required for all SQL Server Mobile applications.
sqlceme30.dll
Contains code required by the System.Data.SqlServerCe.dll file. Required for all SQL Server Mobile applications.
sqlceoledb30.dll
Provides OLE DB connectivity to SQL Server Mobile databases. Required only if your application uses OLE DB to connect to the SQL Server Mobile database.
sqlceqp30.dll
The SQL Server Mobile Query Processor. Required for all SQL Server Mobile applications.
sqlcese30.dll
I also added using System.Data.SqlCE to the form and the dataset designer.cs
From this code in the dateset.Designer.cs file after the run is started the eroror occurs.
[System.Diagnostics.DebuggerNonUserCodeAttribute()]
private System.Data.SqlServerCe.SqlCeDataAdapter Adapter {
get {
if ((this._adapter == null)) {
this.InitAdapter(); Error on this line....
}
return this._adapter;
Already tried this
http://msdn2.microsoft.com/en-us/library/ms171861.aspx
Is it possible to fix this? Or work around it?
Thanks Jon Stroh