Creating Relations Between Tables?
Oct 15, 2009I have created this table using sql but I need to create a relation with another table and I don't know how.
View 15 RepliesI have created this table using sql but I need to create a relation with another table and I don't know how.
View 15 RepliesLets assume that I have 2 tables:
First one is customer table and has primary key called cusid ( auto increment)
Second one is order table and has foreign key custid
How I can connect them, what I mean exactly when insert the record in the customer table I need the foreign key get the same value as primary key in customer table. I'm using sql server 2008 and vb.net 2008.
How to bound this dataset to datagridview?
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Have a good day lets assume that i have 2 tables First one is customer table and has primery key called cusid ( auto increment)second one is order table and has foregion key custid how i can connect them , what i mean exactly when insert the record in the customer table i need the foregion key get the same value as primery key in customer table
Note : I'm using sql server 2008 and vb.net 2008
When I create a form using only one table in a database this works fine. However when I create a form that uses at least two tables I am getting an error on my ReceiptsAdapter (or my SQLDataAdapter). It's saying that I am using the incorrect syntax and need the keyword "From." I am assuming that I am getting this error because I am using multiple tables in my SQLCommand statement.
Imports System.Data
Imports System.Data.SqlClient
Public Class Receipts
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how to store or create a table on my database using vb.net i'm having hard time to create a table on my existing dbase
here my code;
Dim ntable As OleDb.OleDbDataAdapter
Dim mtable As New DataTable
con.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=C:Documents and SettingsjessprDesktopmydbasesample.accdb"
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when i view my access dbase i cant see the table that was created on my code. how can i view that table?
The following code creates a table in a mdb file.Dim tblName As String = Trim(Me.txbTblName.Text)
Dim Source = Trim(Me.txbLoadDB.Text)
Dim Pass = Trim(Me.txbPassDB.Text)
'Define the connectors
Dim oConn As OleDbConnection
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I would like the table name be variable based on the textbox text but the following change creates a syntax error. Why is that?oQuery = "CREATE TABLE '" & tblName & "' ( ID Counter,Name TEXT(50) NOT NULL,PRIMARY KEY(ID) )"
I have 3 tables: Customer, OrderHeader and OrderDetail. Customer and OrderHeader joined by CustomerId, OrderHeader and OrderDetail joined by OrderId.how to create an xml file that combines these 3 tables together having the following structure using ADO.net?
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I am generating tables and writing them to word on the fly. I do not know how many tables there will be each time i write the data to word and the problem I am having is the second table is written inside the first cell of my first table. If there was a third table it is put inside the first cell of my second table.Is there a way to move the cursor out of the table? I have tried creating a new range with each table also but the same thing happens.I have also tried things like tbl.Range.InsertParagraphAfter()The closest I came was using the Relocate method, but this only worked for two tables.
View 3 RepliesI'm almost ascertain there's a better way to do this but for right now I'll go with this. This is using WinForms, NOT on a webpage.
In Visual Basic 2010, I would like to create a form that uses a datagrid view pulling rows from a temporary table made at run time. When the "Submit" button of that form is clicked, the rows from the temporary table will be copied into the regular table. (This is being done as there is no ID# available until AFTER the form is submitted. The ID# is needed because the rows made in the temporary, as well as the entire form, will be associated with THAT number.)
how can I dynamically create a temporary table in MSAccess OR how can I use a datagrid without associating it with a table?
i am creating a booking system for my A2 project but i cant create tables or field in the database and enter information in them. I have created a ms access database in vb but after that im stuck. The database must be created in vb programatically as i get more marks for complex code.
here's my code
Imports ADOX
Module Module1
Sub Main()
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I am trying to load a crystal report from two tables but it seems that is not working.Here is the code to load the crystal report:
Code:
Private Sub InvoiceLoad(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
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I was reading from a book, and there's a way of creating database and accessing its tables using tools available in IDE. i-e DataSet, BindingSource, TableAdapter, BindingNavigator. Is this the correct way of using database or through the code??
View 2 RepliesI am working on a CMS system for my business, and need to be able to generate notifications dynamically into a control panel. Please note, I am using .NET 2.0, coding with VB and my data is all held on a MySQL database.This is pretty simple for most aspects, but as the whole thing is dynamic some things are proving more difficult.I have a set of tags which are dynamically generated with a repeater as follows:
<asp:Repeater runat="server" ID="locationRepeater">
<ItemTemplate>
<p id='locationNotification' title="<%# Container.DataItem %>" runat='server'>
COUNT DATA NEEDS TO GO HERE
</p>
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The data is really, really, simple, all I need to be able to do is query a table on my MySQL database for COUNT of ID WHERE locationName = Container.DataItem during each loop of the repeater... but I don't know how to do this.I'm thinking maybe I have to do this first, create a table in memory somehow, but I am afraid I have no idea how to achieve this.
Has anyone got any examples of a similar thing, it's kind of binding to a repeater from two datasources... each task is very simple, but I don't know how to put it all together!
I have produced some VBA in Access that creates a spreadsheet.I have also created an SQL query that retrieves records from an Access table.I have 48 tables (each table for a specific institution centre).I have created another bit of VBA code that creates a spreadsheet and loads the records from the query in to the spreadsheet.Each centre has a unique Sequence Number (Indent Number)At the moment though, all I can do is import one table (records for one institution) in to a spreadsheet. I want to end up with calling the function and having an output of 48 spreadsheets being saved to my desktop, each spreadsheet containing records of a different center.I have thought about putting a loop in, but not sure how I would quite go about it.
Here is my code to create the spreadsheet:
Public Sub ExcelExport(lngIndentNumber As Long, strFolder As String, strCrit As String, strReport As String)
', ctlLabel As Label,
DoCmd.SetWarnings False
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I have two tables as follows:
Customer | Product
------------------
A | Car
A | Bike
A | Boat
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If I use a normal JOIN then I get a list of friends for every separate product. I just want the two lists once.
The output lists with '-' need not be table cells, they can be <ul>s.
How can I achieve this? I would like to bind to ASP.net GridView. Should I try to do it all in one query, or use multiple queries and somehow add them both to the same Grid?
Each row actually forms part of a long report. Essentially each row of the report contains Customer ID, a bunch of other fields which match one-to-one with Customer ID, then the two lists for each Customer ID I described. Perhaps I can use a separate query for each list, then manually add each list to the grid on RowDataBound or similar?
I'm getting this error 'column' argument cannot be null. Parameter name: column at the bold character instruction. Also I would like to know how to relate two tables with two key columns in each table
Dim connection As New OleDb.OleDbConnection(strTextoConn)
Dim EnPartesdataSet As DataSet = New DataSet("Enpartes")
Dim strsql As String
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I have two list boxes named lb1 and lb2. Those list boxes have following items.
Lb1 Lb2
---- ----
2 4
3 5
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I haven't lost my mind? I have done relationships in the past but now they don't seem to work. Have I gone dumb? Creating a winform, using VS2008, sqlexpress & vb.net. My dataset looks like this:
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When i have a relation between two entities in my model: [GroupMember] (*) ----- (1) [User] and tries to select items from this relation with LINQ: From entity in _user.GroupMember select entity I always get an empty result unless I load the relation first with following statement: _user.GroupMember.Load() Is there a way to avoid loading the relations like this?
View 2 Repliesi have 2 forms lets say form1 and form2, i already connected the ms access to my vb 2008 and im sure that i connect it right. The problems are for example i have this in my ms access table
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I'm trying to generate my own dataset and create parent/child relation on the fly so that the subsequent datagridviews (dgv) that will be displaying the information will filter each child dgv by the record chosen in the parent dgv (I hope this makes sense).
So far I am able to display info in each dgv, but every record from each corresponding table is displayed in each dgv- no filtering is occuring. I think the problem might be in how I'm creating the relation and/or how I'm linking it to the dgv. Here's the code I have on the UI:
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OK, folks, help me figure out what I'm doing wrong. I have the following
Dim table1 As New DataTable("Table1")
table1.Columns.Add("column1", GetType(Integer))
table1.Columns.Add("column2", GetType(String))
table1.Columns.Add("column3", GetType(String))
table1.Columns.Add("column4", GetType(Integer))
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table1.Columns.Add("column7", GetType(String), "parent(Relation1).column6")On the last line where I try to add column7 I get an error saying "unable to find parent relation 'Relation1'". I thought I just added that relation?
I'm working on a program that allows me to edit XML data in a DataGridView. I have most everything working but I don't like my current TreeView Structure. I load the XML data into a DataSet and edit it there, so that is what I'd prefer to base my TreeView on. I've tried a few things such as..
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I have a problem in this Routine(VB2008) :
Dim PubAry(2) As Object
Dim cc(2) As Double
cc(0) = 3.0 : cc(1) = 33.0 : cc(2) = 333.0
PubAry(0) = cc
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The result is:
- pubAry {Length=3} Object()
- (0) {System.Array} Object
- Double() {System.Array} Object
(0) 4.0 Double
(1) 44.0 Double
(2) 444.0 Double
- (1) {System.Array} Object
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Its like Excel Sheet Cells Relations !... Why?
Dim obj_DataTable As New System.Data.DataTable("Category")
Dim obj_DataSet As New DataSet()
'Declaring the array of DataColum to hold the Primary Key Columns
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I am using VS2008 and SQLite. I have created a database and several tables and am attempting to populate the tables with data from arrays.
The following code (example) works fine but stops after it inserts 30 to 50 records. I am running the VB code in debug mode and when it stops, I press pause to see where it is. It stops on "SQLcommand.ExecuteNonQuery()" and when I press continue (F5) it will insert another 30 to 50 records.
I do not get an error message. Is this a timeout issue? How do I keep the loop running to the end of the array?
Following is example code.
Dim
SQLconnect As New SQLite.SQLiteConnection()
Dim SQLcommand As SQLiteCommand
CODE:.....................
have a datagridview containing 2 tables left joined, so that:table1 LEFT JOIN table 2 ON table1.id=table2.idI get an error whenever I try to edit my datagridview."invalidOperationException was unhandled by the user codeDynamic SQL generation is not supported against multiple base tables."The error points to this line:
da.FillSchema(dt, SchemaType.Mapped)
da.Update(dt) << This line
'da = dataadapter
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In my datagridview I was fill in using join tables (table1 = pr_employees, table2 = pr_employee_deduction). My problem now is during save button I want to update records from table2 only.[code]
View 3 RepliesWe are presently developing an application, let's call it APP1, which uses a SQL Database which have about 800 stored procedures, 600 tables, etc. APP1 was originally created in order to replace another application, APP0, from which we do not have source code but only SQL tables, Stored Procedures, views, etc. Previous programers of APP1 used some DB objects from this same database and added some other objects specific to APP1 because it becomes bigger than APP0. And we do not need APP0 anymore as APP1 does all what we want, and more.
So, now, we are thinking about a way to find out which objects are used by APP1 in order to remove objects which are ONLY used by APP0.What is the best approach to discover all objects used by APP1 without having to open every single class and form?
Once we will have a complete list of these objects, it will be easy to use a program we bought which detects all dependencies for all SQL Objects specified directly from SQL and remove objects which do not return from any dependencies. Any ideas of how I could get this list without having to go through all our program that have many, many, many classes and forms?
Note : I know, in a perfect world, all calls to PSs and tables should be in a DAL but in the case of the application we're presently working on ... this is not our case! Yippy! (sarcastic yippy) ;)
Note 2 : This application is not using any ORM. So all queries are directly using SqlCommand. So any call to any DB objects are in string format.