Can this be done in ASP.Net, as it stands my database views in my ASP.Net application are just standard
Unlike the view in MS Access which shows the collapsable linked data below the data (from a different table)
Many thanks
Rich
Hi all,
I am trying to create a diagram for our database, during the creating, I create some of the relationships which were not there(basically our original database is not relational database, that's why I am doing it)
So sometimes I have to chage data type in order to create a relationship for the coloumns in different tables. i.e. change char(16) to varchar(7) (I checked the field that make sure all the data in this field is <= 7 characters)
But when I saved the diagram, there is an error message that state:
Errors were encountered during the save process. Some of your database objects are not saved on your diagram.
'agent' table saved successfully
'VisitUSA' table
- Unable to create relationship 'FK_VisitUSA_agent'.
ODBC error: [Microsoft][ODBC SQL Server Driver][SQL Server]ALTER TABLE statement conflicted with COLUMN FOREIGN KEY constraint 'FK_VisitUSA_agent'. The conflict occurred in database 'CMC', table 'agent', column 'AgentCode'.
What does that mean? is it caused by some of the agentcode data in VisitUSA table which is not in agent table?
Thanks!
Betty
Hi
I'm using VB.NET,ADO.NET in ASP.NET .
Microsoft .Net framework 1.0
Windows 2000
Visual Studio IDE
and SQLServer.
I have to create to tables as
Table1 contains ID,Name
Table2 contains ID,Marks,Foreign Key ie Primary key of the table Table1.
Give me an information how to create these two tables in SQLServer (I know how to create a table but i don't know how to create a table which includes Foreign Key.)
Then using Dataset i want to display the records as Name,Marks which are stored in two tables.
I have studied that in ADO Join query and record set object is used but it gives a problems and it is not good when we want to transfer the data between two applications or pages but dataset solves all those problems.
Give me an information about it.
Kindly help me
Thanks in advance
Regards.
If I have a table that contains default values or a constant values do I have to relate it to my other tables that might need them. Thanks in advance.
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Hi,I have a very simple question.In what cases are relational databases necessary?Are they really necessary in cases where only asingle type of query is to be performed based on one uniquefield or can we just put all fields together in a single databaseand just access them through that unique field?
View 6 Replies View RelatedHi guys,
What is a "Relational Database"?
Thanks,
Aldo.
What is the best approach for storing hierarchical
data in a database? For example, if I need to store a tree menu system,
how would I do that allowing for the most normalization within the
database, using the least number of queries/resources when pulling the
data out, and using the least amount of overhead both in storage and
retrival?
-Chris
Dear friendsI am conducting a survey on Relational Database usage and would likeyour help. The study is part of my MBA Dissertation.Could you kindly spare 5 minutes to take part in this survey?http://FreeOnlineSurveys.com/rendersurvey.asp?id=120816ThanksRajeev
View 11 Replies View RelatedI have a database has the following linklist structure. A, B, B1, B2 and B3 are records.
A is a group and the others are group members
***************************************
A.PointertoB
B.ForwardPointertoB1
B1.ForwardPointertoB2
B2.ForwardPointertoB3
B3.end
***************************************
I want to convert them to relational database structure so I need to find following pointers
B.PointertoA
B1.PointertoA
B2.PointertoA
Can I use sql to find the pointers? Thanks in advance.
I need to create a dimension with a hierchy derived from 3 other dimenions where one of the dimensions contains a recursive hierarchy.
eg:
In my RDBMS I have; a table "Entities" which contextualises geographic locations and (typical columns include and id and a description with values for: ID1=United Kingdon, ID2=France, ID3=Norway, ID4=Finland, ID5=Europe, ID6=Scandinavia, etc.), another table "Entity_Type" which contextualises the values held in "Entities" (Typical olumns; ID1=Continent, ID2=Country) and a table, "Geo_Code" which codifies the values from both "Entities" and "Entity_type". They act more or less like 2 dimensions ("Entities", Entity_Type) and a fact table ("GEO_Code").
The third table has a recursive hierarchy in that it references it's own ID again in column "Entity Reference".
The first table is Entities, the second is Entity_Type and the third is the one that references both.
id
description
01
England
02
Norway
03
Europe
04
Scandinavia
id
description
01
Continent
02
Country
id
entity
Entity_Type
entity Reference
01
03
01
NULL
02
04
01
NULL
03
02
02
02
04
01
02
01
From the last table "GEO_CODE" we can determine the following:
01. Europe is a continent
02. Scandinavia is a continent
03. Norway is a Country that is in Scandinavia (Entity Reference recursive referencing ID 02 of the same table where the Entity is 04).
04. England is a Country that is Europe (Entity Reference recursive referencing ID 01 of the same table where the Entity is 03).
How do I create a new dimension using Visual Studio in Analysis Services where the Hierarchy is reflected?
So far, I have managed to depict 2 Hierarchies: where a dimenion depicts Entity (Countinent/Country) as level 1 and the value of the corresponding entity (Europe, ENgland, Norway, Scandinavia) in level 2 but how do I get to the last bit where the Entity Reference references the location of the Country or Continent???
Hi,
I'm new to SQL CLR programming and have recently implemented a few simple test UDTs. Typically I provide a property called Value and, if applicable, a method to display that value in a different format. For example, I havea UDT representing Australian states: the Value property returns the acronym (e.g. VIC) and the ProperName() method returns the full name (e.g. Victoria).
However, when I do a regular query, say SELECT * FROM Customers, the values in the column in which I am using the UDT are displayed as hex (I believe), for example '0x008064'.
Is this behaviour the result of a faulty implementation on my part or is it just the way SQL Server displays a non-native data type?
Here's the essential implementation code:
[Serializable]
[SqlUserDefinedType(Format.UserDefined, IsByteOrdered = true, MaxByteSize = 58, IsFixedLength = false)]
public struct udt_au_stateId : INullable, IBinarySerialize
{
private bool _isNull;
private AU_StateId _state;
private enum AU_StateId { ACT, NSW, NT, QLD, SA, TAS, VIC, WA }
public void Read(BinaryReader r)
{
SetStateId(r.ReadString());
}
public void Write(BinaryWriter w)
{
w.Write(_state.ToString());
}
public SqlString Value
{
get { return _state.ToString(); }
set
{
if (!SetStateId(value.ToString()))
throw new ArgumentException("'" + value.ToString() + "'" + " is not a valid Australian state or territory.");
}
}
public SqlString ProperName()
{
return GetProperName();
}
public override string ToString()
{
if (_isNull)
return "<NULL>";
else
return _state.ToString();
}
public bool IsNull
{
get { return _isNull; }
}
public static udt_au_stateId Null
{
get
{
udt_au_stateId u = new udt_au_stateId();
u._isNull = true;
return u;
}
}
public static udt_au_stateId Parse(SqlString s)
{
if (s.IsNull)
return Null;
else
{
udt_au_stateId u = new udt_au_stateId();
u.Value = s;
return u;
}
}
/* some implementation details omitted */
Best regards,
Ieyasu
Sharepoint is a pretty darn dynamic service and that got me thinking of how databases are created.
Just wondering out loud, surely someone has thought of creating databases in such a manner, but I don't know if it's a thought that has been struck down.
It would look something like this:
Single Table
ID uniqueidentifier PK
ParentID uniqueidentifier FK to ID
Name nvarchar(MAX)
Value nvarchar(MAX)
In this manner, you would create your database "columns" as needed in the data-layer.
If that is too strict, (every datatype would be encoded to base64), you could create a value option for basically every data type. EG. nvarchar(max), nvarbinary(max).... and add another field that describes the data-type to be used for that "column"
ID uniqueidentifier PK
ParentID uniqueidentifier FK to ID
Name nvarchar(MAX)
DataType nvarchar(50) //constrained to allowable datatypes
MaxLen nvarchar(31) //ahh, what the hey, let's add this for sniggles.
ValueNvarchar nvarchar(MAX) nullable
ValueNvarbin nvarbinary(MAX) nullable
....
Now, to allow the "values" for those "columns", you may be able to still use the single-table approach, but it may be better to have an extra table for that (probably even a different partition and drive).
Things to consider, indexing.....
In development, the data-layer would handle the creation/reading of table columns.
The business-layer, which could be many for different parts of a company, would make it's requests to the DL. It may need a username, and the DL would either just create it, or suggest an already existing username column. The path to that username may not be where a particular biz element wants it, so they will ask the DL create another under a diff path.
The business-layer is probably the most important reason for wanting a single dynamic table.
In the end, the relation structure could be like:
Human //dir, no value, no parent (root)
FirstName //value - text
LastName //value - text
Parent1 //value - Me Id
Sibling1 //value - Me Id
SiblingN //value - Me Id
School //dir, no val
ParentId //value - Id (perhaps category would be Building)
Name //value - text
The sibling N would be an example of how a table may need to be dynamic. A positive of the single-table approach is no limitation on number of "columns". Another is the ease to move a hierarchical structure if needed. School may want to be University instead of just "school" and be placed as a child of "school".
Looking for any thoughts on the subject,
Nathan
Hi, all here,
As people say, Microsoft was the first major database vendor to include data mining features in a relational database. What dose this exactly mean? Thanks a lot for any guidance.
With best regards,
I have sql server 2005 express installed on an XP machine. When I browse for a database engine, SQL server 2005 management console displays machinenamesqlexpress in the local tab, BUT in the network tab only the machinename is displayed. Thus, I cannot connect to express from a networked machine.
Any help would be appreciated.
TIA,
Joe
hello,
I am beginner for asp.net and sql server. I used Sql server manegement studio full version and I exported my aspnetdb which was created by VS2005 to my host sql server. I have a question:
relational tables are not relational no longer. I noticed that when I created database diagram. what is wrong by exporting?
thanks for your helps...
Iam trying to backup my database but nothing is backedup and no error message is displayed. Here is my code.
<%@ Page Language="VB" %>
<%@ Import Namespace="System.Data.SqlClient" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Net.Mail" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<script runat="server">
Protected Sub LinkButton1_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Try
Dim con As SqlConnection
con = New SqlConnection("Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|safetydata.mdf;Integrated Security=True;User Instance=True")
Dim com As New SqlCommand("BACKUP DATABASE safetydata TO c:ackuptest")
com.Connection = con
com.Connection.Open()
com.ExecuteNonQuery()
com.Connection.Close()
Response.Redirect("DeveloperBackup_success.aspx")
Catch ex As Exception
Response.Redirect("~Developerackup_error.aspx")
End Try
End Sub
</script>
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>BackUP Page</title>
Hey All,
This is really simple basic question, and it's just so I can start to learn about MVS.
I have a sql-database called "Test" with a Table called "Agents" with just three colulms "ID", "FNAME" and "LNAME".
On the Default Page I have three Textboxes and a submit Button,
All I want to do is type "Select" criteria in Textbox1 and have Textbox2 Display the "Fname" and Textbox3 Display the "Lname".
(Using VB in ASPX)
Dim i As New SqlDataSource()
i.ConnectionString = ConfigurationManager.ConnectionStrings("Test").ToString()
i.SelectCommandType = SqlDataSourceCommandType.Text
i.SelectCommand = ((((((Now What???)))))))
End Sub
PLease Help, Thanks in advance
A....
I have a sql database where i have descriptions of products stored. I insert text using a simple sql insert and that seems to work fine. But when i try to get these texts and display them in a gridview with an object data source thet brake rows are not displayed. The text is just display with now row brakes at all.
How can i fix this so that i get it displayed in rows? Because its almost unreadable like ths.
Im trying to display data from a database based on an input value. The value in the Label12.Text which is("hotmail") is the input value thats stored in the database, this value is been searched for in the strSQL.
Dim strSQL As String = "SELECT Name FROM Jobseeker WHERE Email='" & Label12.Text & "' "
strSQL = Label5.Text
the code builds successfully, but Label5.Text appears blank.
Got a question here and as I am no expert programmer, this should be easy for you gurus. I have this fairly generic code I've created where I return data from an SQL table in a DataList control. I want to take it to the next level and return only the last record in the table, but I am unsure of how to do that. Perhaps I shouldn't even be using a DataList control, I'm not sure.
View 2 Replies View RelatedI have the following stored procedure in SQL 2000 and would like todiplay the database name where data is drawn from. I'm using 4databases db1, db2, db3, db4 which all have the same table (Table1)with identical column names (Surname, GivenNames).CREATE PROCEDURE [dbo].[x_searchwildcard] @varSurname VARChar(25)ASSelect a.Surname, a.GivenNamesFrom [db1]..Table1 As aWhere a.Surname LIKE @varSurname + '%'UNIONSelect a.Surname, a.GivenNamesFrom [db2]..Table1 As aWhere a.Surname LIKE @varSurname + '%'UNIONSelect a.Surname, a.GivenNamesFrom [db3]..Table1 As aWhere a.Surname LIKE @varSurname + '%'UNIONSelect a.Surname, a.GivenNamesFrom [db4]..Table1 As aWhere a.Surname LIKE @varSurname + '%'Order By a.Surname,a.GivenNamesGOI tried the followingSelect a.Surname, a.GivenNames, db_name()However it only gave me the name of the database where the storedprocedure is kept (in my case 'Common')I was hoping it would display results something like the followingSurname GivenNames Database------- ---------- --------Fred Smith db1Freddy Smith db2Fred Smith db3Fred Smithe db3Fred Smith db4Fred Smithye db4Instead I receiveSurname GivenNames Database------- ---------- --------Fred Smith commonFreddy Smith commonFred Smith commonFred Smithe commonFred Smith commonFred Smithye commonAny ideas?ThanksRick
View 1 Replies View Relatedcan some one help me. im using visual studio.net 2005. its a web application.i have a database with attribute name logo. so i want to upload an image and save it into the database and than display it into the image box to preview how the image looks like.can some one please help me as i am very new in using C# codes and visual studio.net 2005
View 5 Replies View RelatedHello,
I have around 7 ntext fields in my data base table and I am getting data from the data base table through executing stored procedure, But when I am displaying data using record set, few of the ntext fields in recored set are empty .Iam sure that these are having data in table.
I am not sure why recordset is lossing that ntext field data?Because of this I am unable to display that data in web form.
any ideas really appriciated.
Thanks
Ram
I am using SQL Server 2005 and SSRS 2005, and I am trying to display a PDF (image datatype, application/pdf filetype) from a SQL Database. There is no MIME option for PDF, so it seems my options are limited. Is there a way to display the PDF, or maybe convert the binary data at the database level?
View 2 Replies View RelatedHi
I have to populate some datas from sql server database and display it directly in a CSV Format or CSV file. When i run the project it should provide me an option to whether open or save or cancel the file. when i click open it should be opened and be viewed in a excel sheet in CSV format and when i click save it should ask the destination folder and should be saved there in CSV format and when i click cancel it should be cancelled and the application should be closed. pls note that all these actions should happen in the same browser and should not be redirected to anyother page. Can anybody give me the detailed description and code in Asp.Net using C# .It's very Urgent.
RegardsVijay.
How to display an database image in the Report page header of sql server reporting service?
View 3 Replies View RelatedI executed the below query and getting the capacity values only for master database.All other DB shows NULL values for spaceused. I'm actually looking for a query to get all the capacity information other than using temp table and the procedures. Is there any way using SQL query ONLY.
select
db.[dbid] as 'DB ID',
db.[name] as 'Database Name',
af.[name] as 'Logical Name',
convert(decimal(12,2),round(size/128.000,2)) as FileSizeMB,
convert(decimal(12,2),round(fileproperty(db.name,'SpaceUsed')/128.000,2)) as SpaceUsedMB
from sys.sysdatabases db
inner join sys.sysaltfiles af
on db.dbid = af.dbid
Below is the output
DB ID Database Name
Logical Name FileSizeMB
SpaceUsedMB
1 master
master 4.00
3.44
1 master
mastlog 2.00
[Code] ....
We have been asked to look into using stored procedures with SQL Server 7.0 as a way to speed up a clients site. 99% of all the articles I have read along with all the books all say Stored Procedure should be used whenever possible as opposed to putting the SQL in your ASP script. However one of my colleagues has been speaking to Microsoft and they said that that they were surprised that our client wanted to use Stored Procedures as this was the old method of database access and that now he should really consider using COM objects for data access as itis much faster. Has anyone got any views on this or know of any good aticles regarding this matter ?
View 1 Replies View RelatedI have recently upgraded to SQL2014 on Win2012. The Access front end program works fine.
But, previously created Excel reports with built in MS Queries now fail with the above error for users with MS 2013. The queries still work for users still using MS 2007.
I also cannot create any new queries and get the same error message. If I log on as myself on the domain to another PC with 2007 installed it works fine, so I don't think it is anything to do with AD groups or permissions.
Hello.
View 5 Replies View Related
I need to determine the following about the current authenticated Windows domain user who is trying to access a SQL Server via a trusted connection.
1 Has the current user been granted login access to the trusted SQL Server?
2 Has the current user been granted access to a specific database?
3 Is the current user a member of a specific database role such as (DB_ROLE_ADMINISTRATORS)?
Thanks,
Sean
I developed a database with Access 2003 and everything was working good until my tech came in and reformated my hard drive and install a new Ghost image that met our company standards.
Now I cannot go in and make any changes to any of the tables, queries and forms. All of this started when a new Ghost image was installed on my pc.
The message I get when I try to open my database is "You do not have permission to run "tblSwitchboard." I get the same error message when I try to do anything at all on the database.
I am at a loss as to what to do. Please help.
I have a membership database and a profile database with a userid column in both. The foreign key is in the profile database where i want a persons profile details to go like location,occupation and what not. How do I make it so when a new user registers a userId is created in the profile database that matched the userid in the membership database so i can query out profile details based on a registered members userid?
View 6 Replies View Related