We rewrote one of our legacy C#/asp.net applications that accesses a sql server 2000 database. The new database schema looks very similar to the old one. The major difference is that some of the atributes in the database tables are different. But pretty much we are using the same tables, plus or minus a few.
We need to import the old data into the new database. I have never had to undertake this type of thing before as I am not a DBA, but a developer. I feel a little scared about this whole process. My boss is open to us hiring a contractor to help with the process.
My biggest concern is the referential integrity of the database.
Can someone help me out. Does this sound like something that can be easily done or should I ask for some help.
I am still pursuing my studies. I have been recently assigned a project for building Database Application for my college's library. And there was no better option to implement it with VB.NET 2.0 & SQL Server 2005. VB.NET 2005 & SQL Server Express 2005 are the resources at my disposal.
The problem is that the college already has a Library Management System in place, built in VB6.0 with Access. I have been asked to pepare the application from scratch. But the database obviously cannot be left out.
Now, can anyone suggest me an efficient way to port the Access database to SQL Server express. Also, the databse has been desinged poorly & is not properly normalized. Can I port it to SQL Server Express with some slight modifications to its structure without any loss of data??????
Can anyone help me in this issue: How do we replicate database changes (like tables) from QA to production without losing Production data. We already tried using the DTS export but it is dropping the destination tables before export which will result in data loss in the destination database.
I'm working on porting a solution running under WM 5 Pocket PC to Win32 but I got some problems with type definitions like CEOID, CEGUID... I saw that these types are defined in windbase.h (EDB definition added to preprocessors) ) which includes types and definitions usefull for database managment. Anyway this header file is not present in C:Program FilesMicrosoft Platform SDK for Windows Server 2003 R2Include, so I was wondering which is the header file I can use instead of it. Thanks
I have problems while using the Linked Server in MS SQL Server 2000 for data porting.
The Scenario :
I have about 900 hundred tables created in SQL Server database. These tables are freshly created and has no records.
I have created a Linked Server with a DSN connecting to a Sybase database from which the data has to be ported to the newly created tables in SQL Server.
The database creation as well as data porting is done by a Delphi application by executing the scripts in several .sql files.
I have shown an example script below which does the data porting.
INSERT INTO TEST_DATA (COL1,COL2,COL3) SELECT COL1,COL2,COL3 FROM [LINK_SYBASEDB]..[DBA].[TEST_DATA]
The Issue :
I often get the below error which stops the data porting process ( the error is logged in the Errorlog by the Delphi application )
Hi, I am porting a massive VB6 project to ASP.net 2005. Most of the code is fine, however because the original developers used lots of data controls and my own time restrictions I thought to replicate the functionality by using Sqldatasource controls instead. These data controls are bound to DBtruegrids. The project has has lots of code like... AdodcOrders.Recordset.RecordCount > 0 or If AdodcOrders.Recordset.EOF or AdodcOrders.Recordset.MoveNext() or AdodcDetail.Recordset!FieldName The problem is the sqldatasource control doesn't have a recordset/dataset property which I can access and manipulate, or does it? What should I do to get round these? The project has thousands of lines like this in so its not feasible to rewrite it (although if I could I would!). Any suggestions please gratefully appreciated. many thanks mike
Hey everyone - I get the following error when I try to open up a DTS package that I ported from one machine to another as a file. The error is:
Error Source: Microsoft Data Transformation Services (DTS) Package
Error Description: The parameter is incorrect.
Does anyone know what this error is and how to get the package to open? I really don't want to have to rewrite the package if I can avoid. Any help would be greatly appreciated.
I have started a new site using a CMS which can be either Access or MS SQL. For ease of install and cost factors the site is currently running as an Access dbase driven site. If traffic numbers and content grow and Access dbase blows out to, lets say 500meg will I see a major degradation in performance and will it be possible at a later data to somehow export the Access dbase data into MS SQL dbase format. I'm assuming I'd have to engage a fairly competent developer but before I get into the trap of growing a large site, I'd like confirmation that I'd be able to extract all of the data and get it into a more robust solution as and when required. phew!
Has any body done the porting from oracle to sql server, what were theissues in porting the data bases?Also suggest some resources which can be helpful in the porting projectTIAGolu
I have a situation where I have an app that uses a sql server (msde)database. The app will be used in environments where no one should beable to manipulate the data except the developers (app admins) - noteven site database admins. When the application and msde is installed,a default instance of the database gets attached to msde or built byscript. by default, a built in server acct and approle acct exist tosecure the data accordingly with passwords concealed. What can be doneto keep someone from copying the mdf and ldf files to another machinewhere they have admin rights and manipulating data?Thanks.
1) In several tables, in my MySQL version, I created columns usingsomething like the following:`ab_timestamp` timestamp NOT NULL default CURRENT_TIMESTAMP on updateCURRENT_TIMESTAMP,This allowed me to ensure that when a record is either added or edited,the value in the field is set to the current date and time. I.E.,ab_timestamp is given the current date and time when a record iscreated, and then it is updated to the date and time at which therecord is updated. I learned the hard way that MS SQL does not like"on update CURRENT_TIMESTAMP". So, it looks like MS SQL will allow meto initialize ab_timestamp to the current date and time, but notautomatically update it to the date and time at which the record isupdated. I have plenty of code to port that depends on the behavioursupported by MySQL. DO I have to modify all that code, or is there away to get MS SQL to provide it? (Yes, I know 'timestamp' isdeprecated in MS SQL and that I should use datetime instead, and infact have already done so.)2) I began with a single SQL script that creates all the tables, views,functions and triggers the database needs. On trying to get MS SQL toaccept it, I encountered a number of error messages saying that CREATEFUNCTION and CREATE VIEW need to be the first statement in a script.Why? I know I can work around this odd constraint by putting eachfunction and view (and IIRC trigger) into its own script, but thatseems like a make work effort imposed for some unknown reason by MSSQL, unless there is another way to get around it.3) I see, in the documentation for CREATE FUNCTION, functions are notallowed to use a timestamp for either a parameter or a return value.This is in reference to a pair of scalar functions I am using whichneed to manipulate date and time values. For the purpose ofclarification, is this documentation refering to all date/time datatypes, or only the deprecated timestamp type? As examples, considerone function that needs to return the most recent date in a date columnin a specific table, or another function that computes a date from adate and an offset (e.g. if called with the value returned by the firstfunction as the first argument and '-7' as the second, returns the dateof the day that is a week earlier than that date). These two functionsare frequently used in the SQL code I'm trying to port and I reallydon't want to complicate so many of those statements if I don't haveto.ThanksTed
hi, i got the application(from my first post) working in win2003. but this application was made in webmatrix, i.e it had only 2 files, the .aspx file and the web.config file. so i decided to convert this code to a vs.net web application project. i did that and got it working on my xp box. i copied the app folder on 2003, made that folder as an app in iis 6 of win 2003 and tried to run it, and got the following error:-
Server Error in '/emrtd' Application.
Cannot open database requested in login 'ASPState'. Login fails. Login failed for user 'HPSISandeshD'. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code. Exception Details: System.Data.SqlClient.SqlException: Cannot open database requested in login 'ASPState'. Login fails. Login failed for user 'HPSISandeshD'.Source Error:
An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. Stack Trace:
[SqlException: Cannot open database requested in login 'ASPState'. Login fails. Login failed for user 'HPSISandeshD'.] System.Data.SqlClient.ConnectionPool.GetConnection(Boolean& isInTransaction) +472 System.Data.SqlClient.SqlConnectionPoolManager.GetPooledConnection(SqlConnectionString options, Boolean& isInTransaction) +372 System.Data.SqlClient.SqlConnection.Open() +384 System.Web.SessionState.SqlStateConnection..ctor(String sqlconnectionstring) +92
I'm using connection managers for all the connections i have in my packages in one project. However, if i change from one environment to another, i have to go to each connection manager in each package just to set the connection.
is there a faster way to change them like a configuration file lookup or something?
My database knowledge are with MySql and Oracle, but recently I was asked to evaluate the migration of an existing (and maybe more) from ms access to sql server. My question is simple, if all of the sql are hard coded into the code ... how well this sql will work, I mean is the sql between access and sql server are plug'n'play ? However in any case, I always rewiew all of the sql.
Understand, I have developed a number of applications using RDBMS,including MySQL, PostgreSQL and MS Access, but this is my firstexperience with MS SQL. I'd bet my bottom dollar that MS SQL supportswhat I need, but I just haven't found where it is explained in anydetail in the documentation I have. The pages I have found strike meas a little too terse for my needs.In MySQL, I used statements like:PRIMARY KEY (`ic_contact_id`),KEY `ic_planner_id_k_tmp` (`ic_rep_code`)at the end of the SQL statement that creates a table. The primary keyhad to be unique but the other did not. Defining the non-unique keypaid huge dividends in the performance of certain queries, sometimesleading to orders of magnitude improvement compared to when the KEY wasnot defined (a few seconds vs tens of minutes). In joins, these keysrelate to primary keys in other tables that function as lookup tables.Otherwise, their primary role is for aggregation functions (max, min,&c.) in relation to group by clauses. The performance improvementsfrom having the KEYs defined are greatest in the latter.I have learned the hard way that MS SQL seems to like my primary keyclauses but not my KEY clauses. I don't know, and at present don'tcare, if this is because MySQL supports my KEYs as an extension to thestandard, or if it is a matter of the two RDBMS interpreting thestandard differently, or something else. What I need to know right nowis how do I obtain in MS SQL the same benefit as the MySQL KEY providedto me.A second question is that, in studying the documentation for the createtable statement, I saw reference to clustered vs non-clustered keys (atleast I assume they relate to keys since they immediately follow, andare indented from, the primary key and unique keywords). What exactlyis clustered and why? BTW, my primary understanding of "clustering"derives from work with numerical taxonomy and biogeography, but I'dwager that is something completely different from any clustering donein an RDBMS.I'll appreciate any clarification you can provide.Thanks,Ted
Here is one such function:CREATE FUNCTION my_max_market_date () RETURNS datetimeBEGINDECLARE @mmmd AS datetime;SELECT max(h_market_date) INTO @mmmd FROM holdings_tmp;RETURN @mmmd;ENDOne change I had to make, relative to what I had working in MySQL, wasto insert 'AS' between my variable and its type. Without 'AS', MS SQLinsisted in telling me that datetime is not valid for a cursor; and Iam not using a cursor here. The purpose of this function is tosimplify a number of SQL statements that depend on obtaining the mostrecent datetime value in column h_market_date in the holdings_tmptable.The present problem is that MS SQL doesn't seem to want to allow me toplace that value in my variable '@mmmd'. I could do this easily inMySQL. Why is MS SQL giving me grief over something that should be sosimple. I have not yet found anything in the documentation for SELECTthat could explain what's wrong here. :-(Any ideas?ThanksTed
We have a SQL database that uses Active Directory with Windows Authentication. Can users that are members of the Active Directory group that has read/write access to the SQL database create ODBC connections to access the database directly and update the data? They dont have individual logins on the server. They are only members of the Active Directory group that has a login?
I'm in the middle of developing a Database for a hospital that measures its audits, inhouse operations, and finance. What we currently have and do everyday is collect data from a large database that is real time with patient data, progess, infomation, etc and dump it into a data warehouse that runs on TSI/Eclipsys. We run reports using a number of programs and dump it into Excel sheets that have charts, reports, etc. This Database for which I'm developing won't come soley from the TSI/Eclypsys source, but this is the only source thats updated regularly. I don't want to have in sync with TSI/Eclipysys in fear that every day when it updates data may be lost, not read, or worse won't be up date if there is a problem. My question is is it possible to run a query from Sequel Server 2005 that will take that data upon request using the reporing features on Sequel Server 2005. i.e. What if I need to run a report on measure B in department 12 from Jan 1-Feb 1, instead of being in sync, can I just write queries to take that information rather than double the data and take up twice the space and trouble. FYI, these datatypes rarely change in the TSI/Eclipsys data warehouse. This sure was long question and didn't intended it to be . Thanks for listening and hope to hear back.
I want to make data changes in read_only database , that's why i must set database read_write. While database is at read_write mode, i want to be sure that no one makes change in database.
For this aim, i write the code below, but i suspect that after setting the database read_write, till the setting database single_user ,is it possible get DML script from another user. Is the code below enough for this operation. Or is there another way?
Reminding: Read_only database can not be set single_user mode. That's why, first you must set database read_write.
The code;
use master alter database xxx set read_write with rollback immediate alter database xxx set single_user with rollback immediate
use xxx update tablexxx set columnxxx=yyy use master alter database xxx set read_only with rollback immediate alter database xxx set multi_user with rollback immediate
i have a old database in foxpro and it has to be converted to sql server 6.5 database . the table in the foxpro has been broken into more than 1 tables in the sql server . so how can i transfer the data from 1 foxpro table to different tables in sql server 6.5. vineet
I have a system that basically stores a database within a database (I'msure lots have you have done this before in some form or another).At the end of the day, I'm storing the actual data generically in acolumn of type nvarchar(4000), but I want to add support for unlimitedtext. I want to do this in a smart fashion. Right now I am leaningtowards putting 2 nullable Value fields:ValueLong ntext nullableValueShort nvarchar(4000) nullableand dynamically storing the info in one or the other depending on thesize. ASP.NET does this exact very thing in it's Session State model;look at the ASPStateTempSessions table. This table has both aSessionItemShort of type varbinary (7000) and a SessionItemLong of typeImage.My question is, is it better to user varbinary (7000) and Image? I'mthinking maybe I should go down this path, simply because ASP.NET does,but I don't really know why. Does anyone know what would be the benifitof using varbinary and Image datatypes? If it's just to allow saving ofbinary data, then I don't really need that right now (and I don't thinkASP.NET does either). Are there any other reasons?thanks,dave
guys,I have a project need to move more than 100,000 records from onedatabase table to another database table every week. Currently, usersinput date range from web UI, my store procedure will take those dateranges to INSERT records to a table in another database, then deletethe records, but it will take really long time to finish this action(up to 1 or 2 hours).My question is if there is some other way I should do to speed up theaction, I am thinking about use bcp to copy those records to datafileand then use bcp to insert it into SQL Server table. Is this the rightway to do it or should I consider other solution (then, what is thesolution.)Thanks a lot!
I have an original database that I want to copy once to another database. Then I want to update the data weekly with the data of the original database. I don€™t change any tables or columns in that part of the database. Just some tables more in the €˜new€™ database (than the tables from the original database) with some references to the tables that have to be updated weekly. How can I do this? (if you know what I mean... it's a sort of a datawarehouse where different sources come together.. that part that represents the original database is just a part of the datawarehouse. That part is exactly the same structure as the original database.)
Hi ! I have a textbox and a Search button. When the user inputs a value and press the button, i want a datagrid to be filled. The following code runs: Dim connect As New Data.SqlClient.SqlConnection( _ "Server=SrvnameSQLEXPRESS;Integrated Security=True; UID= ;password= ; database=dtbsname") connect.Open() Dim cmd As New SqlCommand Dim valor As New SqlParameter("@valor", SqlDbType.VarChar, 50) cmd.CommandText = "Ver_Contactos_Reducido" cmd.CommandType = CommandType.StoredProcedure cmd.Connection = connect cmd.Parameters.Add(valor) cmd.Parameters("@valor").Value = texto Dim adapter As New SqlDataAdapter(cmd) Dim ds As New System.Data.DataSet() adapter.Fill(ds) GridViewContactos.DataSource = ds GridViewContactos.DataBind() connect.Close() I drag a datagrid on the page and only changed its Id. Into the SQL database the stored procedure is the following: ALTER PROCEDURE [dbo].[Ver_Contactos_Reducido] (@Valor VARCHAR(100)) AS BEGIN SET NOCOUNT ON; SELECT NombreRazonSocial, Nombre, Apellido,TelefonoLaboral, Interno, TelefonoCelular, Email1, Organizacion FROM CONTACTOS WHERE NombreRazonSocial = @Valor OR Nombre = @Valor OR Apellido = @Valor OR TelefonoLaboral = @Valor OR Interno = @Valor OR TelefonoCelular =@Valor OR Email1 = @Valor OR Organizacion= @Valor END When i run the page i can't see the datagrid, and after i enter a text and press the button, nothing happens. What am i doing wrong?? Thks!!
We have a daily process, which copies millions of rows of data from one DB to another over Linked Server. Just checking on the best practise, are there more efficient ways than the Linked server to copy millions of rows of data from one DB to another? I checked bulk insert but that transfers the data from the file to DB not DB to DB.Â
I took our SYBASE DDL and created the tables on an SQL Server Express datbase on a PC and then downloaded our data from UNIIX using the WinSCP utility and BULK Inserted the data into the SQL Server database and everything uploaded fine apparently, but when we go to use the data we are getting some data differences.
Do you know of any data conversion issues that may be coming into play here maybe?
If I want to copy the data from Table1 in Database A to Table2 in Database B but Table1 column name is code , Table 2 column name is vesselcode. (Code = vesselcode)
How to copy all data from Table1 in Database A to Table2 in Database B ? Do I need to write the SQL statment ? and Can I use Server Enterprise Manager Tool?Thx a lot.
