There is a possibility of a unique database for various applications.
Example users of a table that has the name, email, registro.Uma application included in a user table and other application also included in this table.
Hi;
I have an ASP.NET application with a SQL Express database.Here is the connection string used on the web application:"Data Source=.SQLEXPRESS;AttachDbFilename=|DataDirectory|admindata.mdf;Integrated Security=True;User Instance=True" providerName="System.Data.SqlClient"
Now, i create a Windows application which will run on the server to perform some scheduled tasks, for the Windows application I used this connection string:"Data Source=.SQLEXPRESS;AttachDbFilename=D:WebSitesmywebsite.comwwwApp_Dataadmindata.mdf;Integrated Security=True;User Instance=True"The problem is, when the web site is running and using the database, the windows application can't connect to the database and i don't know where i'm doing wrong, if it's the web application connection string or, if it's the windows application connection string.
I hope someone had the same experience and can point me to a direction.
Thank you;Emerson Brito
Hi,A quick question, is it possible to deploy a website on a shared hosting environment which attaches to a MDF database file stored in the App_Data folder?
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Does anyone know if two different database belong to two different applications stay in the same physical SQL server 7.0 with one server license would affect their performance?
Would the performance be better off if each database stored in different physical SQL Server 7.0 with different server license?
Thank you in advance!
Hello,
Does anyone know if there is a read-only unique identifier of a database in a given server instance? E.g. a value stored somewhere in the database meta data that is generated during CREATE DATABASE...
This index is not unique
ix_report_history_creative_id
Msg 2601, Level 14, State 1, Procedure DFP_report_load, Line 161
Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'.
The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
Msg 3621, Level 0, State 0, Procedure DFP_report_load, Line 161
The statement has been terminated.
Exception in Task: Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'. The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
The statement has been terminated.
I need to develop a strong licensing solution based on the database accessed...
Currently our solution is easily hackable because the the license information is kept in the database of your choice and is not dependant on some static information, the current encryption key is static and kept in the software so it can be hacked easily. What i want to do to change this is simple in nature but i don't know how to get that one particular info i need.
I want to get some kind of unique identifier for a database (catalog) that sql server could generate. This info must be static and must not be movable. If for example, someone would backup and restore, this information would not be transfered with the backup. Thus, a user that backups his database and restores it on another database server or another database catalog even on the same server would corrupt his license since the Unique ID returned by the SQL Server would be different; the hashing code would change and thus the decryption would fail.
Is there any such info i can query using SQL that will not require admin rights?
hello,
i have two datasets. i want to insert all data from one dataset to other.
i am using this:DataSet old = new DataSet();
download dd = new download();old = dd.contactlist("select", "admin", "001");
SqlConnection conn = new SqlConnection(ConfigurationManager.ConnectionStrings["Project1ConnectionString"].ToString());
try
{string cmd = "select * from contact";
SqlDataAdapter danew = new SqlDataAdapter(cmd, conn);DataSet dsOld = new DataSet();DataSet dsNew = new DataSet();
dsOld = old.Copy();
danew.Fill(dsNew);
DataTable dtOld = dsOld.Tables[0];DataTable dtNew = dsNew.Tables[0];
//int i;foreach (DataRow objRow in dtOld.Rows)
//for(int i=0; i<dtOld.Rows.Count; i++)
{DataRow row;
row = dtNew.NewRow();
row["company"] = objRow["company"];
row["cust_no"] = objRow["cust-no"];row["sman"] = objRow["sman"];
row["first_name"] = objRow["first-name"];row["contact_title"] = objRow["contact-title"];
row["type"] = objRow["type"];row["contact_loc"] = objRow["contact-loc"];
row["cust_name"] = objRow["cust-name"];row["addr1"] = objRow["addr1"];
row["addr2"] = objRow["addr2"];row["city"] = objRow["city"];
row["state"] = objRow["state"];row["zip"] = objRow["zip"];
row["territory"] = objRow["territory"];row["phone"] = objRow["phone"];
row["fax"] = objRow["fax"];row["extension"] = objRow["extension"];
row["email"] = objRow["email"];row["rec_key"] = objRow["rec_key"];
dtNew.Rows.Add(row);
}DataSet nds = dsNew.GetChanges();SqlCommandBuilder bld = new SqlCommandBuilder(danew);
danew.Update(nds);
}
here rec_key is the primary key.
this code works fine but it will insert all data from one dataset to other each time i click a button but i wanted that if data with a rec_key already exists will not insert. only unique values of rec_key will be inserted.
i am using this code for this:foreach(DataRow rr in dtNew.Rows)
{
if (rr["rec_key"] == objRow["rec_key"])
{
Response.Write("same");
}
else
{
dtNew.Rows.Add(row);
}
}
but this doesn't work.
please guide me how can i do this.
thanks
I am getting problem in unique row in database table, but not getting unique row because I have used Distinct keyword but not getting unique row so how can we do?
I have two table one table information another table Id. But second table in two code same but I am using distinct keyword i get some row unique but second table in two row in same code but when i am fetching row same auto_id render same id create duplicate row. But I am getting only unique row.
how to prevent the insertion of the same entry of an unique value into the database?
assume that I have a primary key username " abc" in the database
and then I insert the "abc" again ,the debuggging error msg pops out saying the primary key cannot be duplicated..
how can I do an if--else statement to check the database against this unintentional inputs of the same unique data " abc"???
Can anyone suggest an appropriate strategy to create unique index's when a distributed database is used. As a bit of a background I have several SQL Server 2005 servers scattered around the country and I am trying to come up with a way to create a unique index i.e. one that hasn't been used in a particular table say Staff in any of the databases around the country.
Performance is an issue particularly as our network isn't that fantastic has anyone done something similar and achieved reasonable speeds?
Thanks ...
A UNIQUE INDEX must inherently impose a unique constraint and a UNIQUE CONSTRAINT is most likely implemented via a UNIQUE INDEX. So what is the difference? When you create in Enterprise Manager you must select one or the other.
View 8 Replies View RelatedHelloWhat should I use for better perfomance sinceunique constraint always use index ?ThanksKamil
View 5 Replies View RelatedWhat's the difference in the effect of the followings:
CREATE UNIQUE NONCLUSTERED INDEX
and
ALTER TABLE dbo.titles ADD CONSTRAINT
titleind UNIQUE NONCLUSTERED
I found there're two settings in Indexs/Keys dialog box of the management studio, Is Unique, and Type. The DDL statements above are generated by setting Is Unique to yes plus Type to Index, and just Type to Unique Key, respectively. What's the difference between them?
Hi everyone,
I need urgent help to resolve this issue...
As far as the performance goes which one is better..
Unique Index(col1, col2) OR Unique constraint(col1, col2) ?
Unique constraint automatically adds a unique index
and unique index takes care of uniqueness then whats the use of unique constraint ?
Which one do one use ?
thanks
sonali
BOL says a unique constraint is preferred over a unique index. It also states that a unique constraint creates a unique index. What then is the difference between the two, and why is a constraint preferred over the index?
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hi team,
.Can i create umique constraint with out unique index.when i am creating a unique constraint sql creates a unique index (default) can i have only unique constraint ?
I am having a problem trying to figure out the best way to get the results I need. I have a table of part numbers that is joined with a table of notes. The table of notes is specific to the part number and user. A row in the notes table is only created if the user has entered notes on that part number. I need to create a search that grabs all matches on a keyword and returns the records. The problem is that it currently returns a row from the parts table with no notes and a separate row with the notes included if they had created an entry. It seems like this should be easy but it eludes me today.
Here is the code
Code Snippet
create procedure SearchPartKeyword
(
@Keyword varchar(250) = null,
@Universal_Id varchar(10) = null
)
as
select p.PartNumber, p.Description, p.ServiceOrderable, n.MyNotes, p.LargestAssembly, p.DMM,
p.Legacy, p.Folder, p.Printer
from Parts p inner join notes n on p.PartNumber = n.Identifier
where n.Universal_ID = @Universal_ID and p.Description like @Keyword
union
select p.PartNumber, p.Description, p.ServiceOrderable, '' as MyNotes, p.LargestAssembly,
p.DMM, p.Legacy, p.Folder, p.Printer
from Parts p
where p.Description like @Keyword
and the results:
PartNo Description SO Notes LA DMM Legacy Folder Printer
de90008 MAIN BOARD 1 DGF1 114688 0 0 0
de90008 MAIN BOARD 1 I love this part Really I do DGF1 114688 0 0 0
This could return multiple part numbers and If they have entered notes I want the row with the notes
Thank You
Dominic Mancl
What 's difference between Unique key and unique index in SQL server 2005?
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I am going on circles about this, and just don't know what to do.
Please please please. love me do.
Hi, I am needing help on which MSDE version support 25 concurrent users. Can anyone help?
Creating an intranet that I would like to run on msde. My problem is that it wont allow more than one person to access the intranet at a time.
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Thanks
If there are 2 different web application connecting to a sql server database through ODBC connection, both of them have full privilege to update , create , add column etc. Would there any issues of SQL server impacts when actually on live.
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Does anyone know about some useful resources of programming Accounting and General Ledger applications..SQL scripts,books..etc.
Thanks to all..
how do i find out what application is using certain DB?.
=============================
http://www.sqlserverstudy.com
Hi all,
Can anyone tell about impact of SQL server in web applications
Thanks in advance
Hi,
I have developed several PPC apps in VS2003, which i have deployed to other PPCs using sqlce.wce4.armv4.CAB for the database runtime.
Now I developed a new app. version in Visual Studio 2005, using the free SQL server express database that came with it.
I can create a .cab file for the app using a setup project, but it eludes me what to install on the PPC of the customer, database wise.
Is there some kind of installable runtime for sql server express ?
(Or what is it called today ?)
thx in advance,
Paul.
I am running SQL Server 2005 Dev x86 with SSRS SP1 on Windows2003 Svr SP1.
My SQL Server is running and SSRS is working. When I come to run certain installs though, my Server name is not present in the dropdowns or in the browse for installed server lists.
I entered the name of my SQL server manually, but when I ran the application, it gave me an error: 00250 unable to run dtabase locator service.
Any ideas?
i am a computer sciences engineering student and and we have an assignment to create a web project with a database.
Our lecturers will store our submissions on a db server but they want our projects enable the restoring our own databases..
that is, they wanna be able to have a copy of our databases to a new db that they have just created.. and they want us to enable this feature in an install.aspx page in our project.. the new db is guaranteed that will have the same name as ours..
so now what i am supposed to include in install.aspx?
Hi All.. I have an 3 tier web applications and I want to use sql transactions but not in each class.
Example :
I have 3 clases who need to update each table in one transaction how I do use sql transactions. I try to do in this way but not work:
sub cmdupdate_click dim a as new class1 dim b as new class2 dim c as new class3 dim cn as new sqlconnection...... cn.open .....transactions.... scripts a.cn =cn ...I pass the same connection via property to each class a.update b.cn=cn.... b.update c.cn=cn..... c.update
Transaction...scripts to commit cn.closeend sub
maybe that logic is incorrect. I dont now is my explain is clear.
Our company wants to run web based application
in folowing way.
Browser --> WebServer -->Sql Server
Sql server is part part of corporation domain and has about 25 more databases
Should we dedicate extra SQL server to run Web apps , or it would be safe to run web apps on corporation Sql Server?
or
If any one can point on links on this subject?.
Thank you
What is the correct way to move applications from one server (2000) to another server(SQL 2005). I have to move all the databases as well as applications from one server to another.Here is my procedure:
1) Backup all 65 databases in first server(600GB total)
2)copy all the backup files from one server to another(destination)
3)Make all database(single user)and take transaction Log backup
4) Restore all database to destination server in norecovery mode and restore all transaction log in Recovery mode)
5)stop server 1 and point the application to another server
So how much downtime i have to face since it is 24/7 production server. and
Can you please give the correct details so i can apply.
Hi All,During the past couple of years I have been maintaining the company'sAccess databases, in the coming weeks I will be migrating data to SQLserver, I will be using the Access forms as a frontend to access datawhile we developed a new front end through VB.Net.I was wondering if anyone will recommend an application that makes anexact replica or backup of the SQL server in the case the SQL serverfails. With MS Access, if a record is corrupted we needed to go backto the previous day backup of the database, we cant afford to havethis issue any longer.Regards,John
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