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Using XSD.exe MS will give the following results which leads me to believe they do not like null.
<?xml version="1.0" encoding="UTF-8"?>
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" elementFormDefault="qualified" attributeFormDefault="unqualified">
<xs:element name="sample">
<xs:complexType>
<xs:attribute name="maxQuantity" type="xs:int" use="optional" />
</xs:complexType>
</xs:element>
</xs:schema>
will generate
//------------------------------------------------------------------------------
// <autogenerated>
// This code was generated by a tool.
// Runtime Version: 1.1.4322.2032
//
// Changes to this file may cause incorrect behavior and will be lost if
// the code is regenerated.
// </autogenerated>
//------------------------------------------------------------------------------
//
// This source code was auto-generated by xsd, Version=1.1.4322.2032.
//
using System.Xml.Serialization;
/// <remarks/>
[System.Xml.Serialization.XmlRootAttribute(Namespace="", IsNullable=false)]
public class sample {
/// <remarks/>
[System.Xml.Serialization.XmlAttributeAttribute()]
public int maxQuantity;
/// <remarks/>
[System.Xml.Serialization.XmlIgnoreAttribute()]
public bool maxQuantitySpecified;
}
A man said to the universe:
"Sir I exist!"
"However," replied the Universe, "The fact has not created in me A sense of obligation."
-- Stephen Crane
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Interesting, thanks. They must equate NULL with 'not specified'.
"Nothing ever changes by staying the same." - David Brent (BBC's The Office) ~ ScrollingGrid: A cross-browser freeze-header control for the ASP.NET DataGrid
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really my sample probably doesn't directly apply to your situation but it does illustrate where MS seems to be going with nulls in general. I don't believe there XML validator even supports nillable.
A man said to the universe:
"Sir I exist!"
"However," replied the Universe, "The fact has not created in me A sense of obligation."
-- Stephen Crane
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I have two identical tables in which the columns and data types are of same type.
But one table is having some data whereas the other table is empty. Both are existing tables. I want to transfer/copy all the data from table1 to table2 by using a query.
How can I do this with a query
Thanks,
Sandeep S. Sekhon
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Hi,
How can I add additional data to SQL Server 2k login.
I have a database with logins/users for each person that can login I need to add extra information and create a relation (based user login or index) to other tables in my database.
Sample:
"document" has an author, author is a user that can login to SQL server.
How can I add relationship from "document" table to SQL server login?
Thanks for any suggestions how to do that.
If this is not a good idea to create a relationship between SQL server login and other tables, is there other solution for similar problem?
regards
dobrzan
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What I need is to extend the basic login/account.
There is a number of accounts/logins that have access to database.
Each user (which is a login/account) can do some things depending on other data collected in database.
Example:
There is a "customer" table in database. Each "customer" can order "product". There is relationship between customer and product - lets say it's done by "order" table.
Now when customer connect to database (using his SQL Server login) I want to have a view that shows what "product" "customer" ordered. So there must be a some kind of way to link SQL Server login with entries from "customer" table.
It's quiet simple thing, when I log to codeproject I can track my posts. I can do that without SQL Server, but I want to create secure app - based on SQL Server Login authentication.
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Since all this will be done through an application* you let the business logic in the application (or in stored procedures) filter the data returned to the user of the application.
dobrzan wrote: but I want to create secure app - based on SQL Server Login authentication.
Current advice is not to use SQL Server Authentication unless you are connecting it to systems that are not windows based. You should be using trusted connections with Windows Authentication. What you are suggesting is less likely to secure your system because your users will have some direct access to your SQL Server (even if they don't know it). This access can be used by an attacker to compromise your system. All an attacker needs is an account to your application and you automatically give them an account to the datbase.
If you have a web application, it will probably try to connect to SQL Server using the ASPNET account if you let it use a trusted connection. Let it do that. Create your own user tables to handle the users of your application. Do not use the sysusers table in SQL Server, it is not designed for that purpose.
you are not going to give your customers direct logins to your SQL Server as that would be nuts - Imagine if Code Project added a login in its SQL Server for each of its 3million+ members - it also screws with connection pooling making it very inefficient
Scottish Developers events:
* .NET debugging, tracing and instrumentation by Duncan Edwards Jones and Code Coverage in .NET by Craig Murphy
* Developer Day Scotland: are you interested in speaking or attending?
My: Website | Blog
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So you suggest that I should use one login or windows based auth. to give users access to database (SQL Server) and distinguish each user by my own login logic in my app or web page.
Am I right?
Is this what others do?
Anyway thanks for help.
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Hi
i opened one of my sqlserver 2000 databases with sqlserver 2005 without any problem,
but i can't see my database diagrams,and i can't create new diagram there.
please help me.
thanks is in forward.
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thanks for your attention and your reply
but if i create and modify tables form 2005 and create and modify diagram from 2000.does any problem occure or not problem?
thanks again.
Human knowlege belongs to the world
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That's it, Why can't i use 2 DataReader with same connection? How can i do multiple queries from the same connection.
Thanks.
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Hi, i just did it but that second connection is what i have been trying to avoid. I remember that with ADODB in VB6 i was able to do multiple command and reads from the same connection.
Thanx, it works this way anyway.
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If you have a connection you can execute multiple commands on it. Also, keep in mind, that idenctical connection strings will use the connection pool.
A man said to the universe:
"Sir I exist!"
"However," replied the Universe, "The fact has not created in me A sense of obligation."
-- Stephen Crane
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Understood.
I was trying to use only one connection to gain performance but now i replaced the second connection with a subquery in a command of the original connection, check this tasty and parameter rich query:
"select SUM(t1.total - COALESCE(t2sum,0)) from ventas as t1 left join (select venta, SUM(cantidad_pagada) as t2sum from pagos_ventas where fecha_pago='" + CDC.Global.SetDBdate(hoy) + "' and metodo_pago<>1 and metodo_pago<>7 group by venta) as t2 on t2.venta=t1.id where t1.nula=0 and t1.pagada=0 and t1.fecha='" + CDC.Global.SetDBdate(hoy) + "'"
Bye.
-- modified at 15:29 Tuesday 18th July, 2006
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Hi, i used the wrong word but you know what i mean, thanks for the link.
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Multiple Active Result Sets (MARS). Probable you need ADO.Net 2.0.
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Hi everyone!
I need to display the save changes message box in my windows form if user try to close the form without saving data.so can anyone help me to do this pls/
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