Wich Is Faster? In Relation To These Two Business Object Scenarios
Jun 27, 2006
I kow for a solid comparison between using datareaders and datasets I will have to perform that myself. But for now I will be utilizing datasets...
What I am doing is currently utilizing assemblies to create my datasets ahead of time. I will eventually compile them as dlls. I'm just utilizing assemblies during my building/testing fase.
My questions is:
Is it faster to completely build the datasets and all needed connections inside the assemblies/dlls and fill them? Or to build the datasets and connections as a sub procedure that can be accessed and then fill them as each required set of data is needed?
I ask because I will be having many different data connections and so I'm not sure if it's faster to explicitly build/fill almost each and every one and have them compiled at runtime ready to be accessed, or to file them when called from a sub etc...?
As I take it, the server should track and monitor which are used the most, and cache them, so as to operate faster. I wonder if it will still do this if the datasets aren't pre-filled?
I was wondering if it is possible to use a generic list object to use as the datasource/data for a report? Right now we use these business objects to display information on our website and would be great it we could re-use those objects and create reports based on them. We are doing some calculations etc in the business layer to build these objects, so if we could re-use, that would be best. Thanks!
Hi, I've the sql code below wich give interesttarget 78 as a result wch I shouldn't. I think it has something to do with the'(' and ')' . SELECT Top 5 * FROM TestnetCampaign a, TestnetAds b WHERE a.campaignid = b.campaignid AND b.sizeid = 21 AND ( a.interesttarget LIKE '10,%' OR a.interesttarget LIKE '%,10,%' OR a.interesttarget LIKE '%,10' ) AND ( a.interesttarget NOT LIKE '78,%' OR a.interesttarget NOT LIKE '%,78,%' OR a.interesttarget NOT LIKE '%,78' ) ORDER BY a.ecpc DESC Any suggestions? Thanks! Roel
when one should use SSIS..different data sources,different destinations..etc...i hav never been in such a situation..i have been a developer..beside SSIS are there any MS tools?
TABLE ITEMS ItID(PK) | ItName --------------------------------------------------------------- 1 Bike 2 Car 3 Boat
TABLE DET ItID(PK)(FK of ItID) | Detail --------------------------------------------------------------- 1 Mountain 1 With Suspension 2 5 Airbag 2 3500 c.c. 2 215cv. 3 with cabinet
And i want a table result like ItId ItName Detail --------------------------------------------------------------- 1 Bike Mountain 2 Car 5 Airbar 3 Boat with cabinet
WHAT "JOIN" I NEED TO USE OR WHAT QUERY I NEED TO WRITE. CAN ANYONE WRITE ME THE QUERY, that as i show in example, will return only the first Detail for each Item
Does anyone have any good places where I can get some practice scenarios for DBA activity? Also any transact sql puzzles to solve for practice purposes. I want to get as much "real world" activity under my belt as possible in a quick time-frame.
What are the specific types of scenarios where we could use SSB and BizTalk in tandem?
I have come across a gotdotnet sample of an SSB adapter for BizTalk. As i understand a Biztalk orchestration could be an end point for the SSB conversation.
But what advantages can be obtained using this as compared to a typical SQL adapter for BizTalk which does CRUD operations on DB.
Does anyone have a successful prescribed sequence for installing VS2005 and Business Intelligence Reports Projects on a Vista Business workstation to be used to create reports for a server?
I've looked through everything I can find here and I don't seem to see a clear solution without a lot of trial and error.
Fact is, I've not been successful getting just the reports to install on a plain XP box. Of course, the report creation looks fine on the server but I don't want to work directly on the server.
Can anyone take me through synchronization of contacts within Business Contacts Outlook into Microsoft Small Business Accounts?
I run a stand alone PC with NO network. When SBA came SQL was also installed. Apparently you can synchronise Contacts within Business Contacts with SBA but both SBA & Outlook should work through the same SQL server.
I have done some performance testing to see if asynchronous triggers performs any better than synchronous triggers in a simple audit scenario -- capturing record snapshots at insert, update and delete events to a separate database within the same instance of SQL Server.
Synchronous triggers performed 50% better than asynchronous triggers; this was with conversation reuse and the receive queue activation turned off, so the poor performance was just in the act of forming and sending the message, not receiving and processing. This was not necessarily surprising to me, and yet I have to wonder under what conditions would we see real performance benefits for audit scenarios.
I am interested if anyone has done similar testing, and if they received similar or different results. If anyone had conditions where asynchronous triggers pulled ahead for audit scenarios, I would really like to hear back from them. I invite any comments or suggestions for better performance.
The asynchronous trigger:
Code Snippet ALTER TRIGGER TR_CUSTOMER_INSERT ON DBO.CUSTOMER FOR INSERT AS BEGIN DECLARE @CONVERSATION UNIQUEIDENTIFIER , @MESSAGE XML , @LOG_OPERATION CHAR(1) , @LOG_USER VARCHAR(35) , @LOG_DATE DATETIME;
SET @MESSAGE = ( SELECT CUST_ID = NEW.CUST_ID , CUST_DESCR = NEW.CUST_DESCR , CUST_ADDRESS = NEW.CUST_ADDRESS , LOG_OPERATION = @LOG_OPERATION , LOG_USER = @LOG_USER , LOG_DATE = @LOG_DATE FROM INSERTED NEW FOR XML AUTO );
SEND ON CONVERSATION @CONVERSATION MESSAGE TYPE CUSTOMER_LOG_MESSAGE ( @MESSAGE ); END;
The synchronous trigger:
Code Snippet ALTER TRIGGER TR_CUSTOMER_INSERT ON DBO.CUSTOMER FOR INSERT AS BEGIN DECLARE @LOG_OPERATION CHAR(1) , @LOG_USER VARCHAR(15) , @LOG_DATE DATETIME;
I am writing a package that i want to have email me on two possible success scenarios.
essentially, this is the conditions:
IF @result = 0 BEGIN EXEC master..xp_cmdshell @copyfile, NO_OUTPUT PRINT 'Operation Successful' END ELSE BEGIN RAISERROR ('This operation failed. Error Code:01. The source and destination files are identical.', 0, 1) END
If the first condition is met, I want to fire off an email stating success. If the second condition is met (the RAISERROR) then i want to fire off a different email.
Now, the problem is, I am not sure how to flow it. Both conditions are successful, thus it always fires off the success email if i use an "On Success" flow.
How do i capture the RAISERROR before the email to tell it which email to send?
I am writing a package that i want to have email me on two possible success scenarios.
essentially, this is the conditions:
IF @result = 0 BEGIN EXEC master..xp_cmdshell @copyfile, NO_OUTPUT PRINT 'Operation Successful' END ELSE BEGIN RAISERROR ('This operation failed. Error Code:01. The source and destination files are identical.', 0, 1) END
If the first condition is met, I want to fire off an email stating success. If the second condition is met (the RAISERROR) then i want to fire off a different email.
Now, the problem is, I am not sure how to flow it. Both conditions are successful, thus it always fires off the success email if i use an "On Success" flow.
How do i capture the RAISERROR before the email to tell it which email to send?
Hi, i'd like to try Express2005 but before i'd like to know wich are the limit vs Sql Server. I had seek in Microsoft's site but i haven't found it anyone kwon it ? Thank's for the answer
Hello friends ! Wich one is more efficient way to use a sql mdf file in Sqlexpress ? attaching a mdf file on sqlexpress ( and use initialcatalog in connection string ) or use AttachDbFilename on connection string directly ? Is there any difference in performance and speed ? Thanks a lot
I'm attempting to develop a course whose objective is to present the users with several scenarios of broken or hung databases caused by different things that they then have to fix.
Do you have any ideas or examples of how to break a database and the reasons behind it, also how to repair it afterwards !!
Hello, I had a notification set up using xp_sendmail working fine for a while. Recently I updated the SQL Server (http://www.windowsitpro.com/Forums/messageview.cfm?catid=1664&threadid=129743#) to sp3a and we moved the mailbox (http://www.windowsitpro.com/Forums/messageview.cfm?catid=1664&threadid=129743#) that I was using to a Exchange 2003 server. I can still send my notification if I use the domain ID that runs the SQL service and the sa ID, but not the NT ID's that were running it before. I have users use NT authentication (http://www.windowsitpro.com/Forums/messageview.cfm?catid=1664&threadid=129743#) from a domain that's different than the one that the SQL server (http://www.windowsitpro.com/Forums/messageview.cfm?catid=1664&threadid=129743#) resides. There is a trust and nothing has changed with that. Below are the results when I try to run the notification using an NT ID. This ID has full permissions over the SQL server. SQL Mail session started.ODBC error 8198 (42000) Could not obtain information about Windows NT (http://www.windowsitpro.com/Forums/messageview.cfm?catid=1664&threadid=129743#) group/user 'INTERNALxxx.xxx'. Stopped SQL Mail session. As you can see SQL Mail starts and stops ok, but I get the error on the xp_sendmail itself. I can run xp_logininfo to return all of the ID's using this NT login. But if I run xp_logininfo just on the problem ID, I get the following results. EXEC master..xp_logininfo@acctname = 'INTERNALxxx.xxx' Server: Msg 8198, Level 16, State 24, Procedure xp_logininfo, Line 58Could not obtain information about Windows NT group/user 'INTERNALxxx.xxx'. Here's when it works. EXEC master..xp_logininfo BUILTINAdministrators group admin BUILTINAdministrators NULLINTERNALxxx.xxx user admin INTERNALxxx.xxx NULLINTERNALSxx Axx group admin INTERNALSxx Axx NULLSISDOMsxx.dxx.axx user admin SISDOMsxx.dxx.axx NULLSISDOMSxx.Dxx.Axx group admin SISDOMSxx.Dxx.Axx NULLINTERNALlxxx.rxxx user user INTERNALlxxx.rxxx NULL The ones in bold work for everything. Please advise? Julie
I have a table customer wich has the columns phone_number(char type) and ok_to_call(bit type). There are already data in the table and the column ok_to_call only contains the value false for every row.
Now i want to update the latter column. I have a text file with a list of phone numbers and i want that all the rows in the Customer table(phone_number column)that matches the number in the text file to update ok_to_call to true.
This is to be done in SSIS(Integration Services). I'm new at this and i've looked around that tool but is a lot of items, packages and stuff so i dont know where to begin.
Would appreciate help on how to solve this issue in SSIS. What controlflow/Data flows to use,wich items and packages to use, how to configure and how to link together?
ciao a tutti...ci risono...devo migliorare delle performance di accesso ad una tabella...la tabella non ha indice primario, ne altri indici...sulla tabella ci accedo con select di questo tipo..select @ExistInOAG = count(*)FROM caprs05dev.dbo.OAGWHERE Air_Carrier = @Aircarrier andcast(ltrim(rtrim(Flt_nbr)) as int) =cast(ltrim(rtrim(@ComFltNbr)) as int) andAipt_Dpt = @AIPTDep andAipt_Des = @AIPTDst andDT_FLIGHT = @Date_Rif andconvert(varchar, STD, 102) = convert(varchar, @STD,102) andconvert(varchar, STA, 102) = convert(varchar, @STA,102)ho provato a creare diversi tipi di indici, ma le performance migliorile ottengo se lascio stare tutto come era senza nessun'indice!!!! visembra possibile???le prove che ho fatto sono queste...inserire un indice tipo Primary con i campiFlt_nbr,Aipt_Dpt,Aipt_Des,STD,STAcreate Unique, tipo Index, con Ignore duplicate key...create as clustered checcato e fill factor 100%... ci accedopraticamente solo in select nel file...avete consigli per migliorare le performance di accesso allatabella????grazie.. stefano!!!
Hi friendsI have one Table called tblCategory.I have three Column CatID, CatName, ParentIDI have many records in this TableCatID CatName ParentID1 Cat1 0 2 Cat2 13 Cat3 14 Cat4 25 Cat5 26 Cat6 07 Cat7 68 Cat8 69 Cat9 710 Cat10 711 Cat11 8 Here I have Main Category which has ParentID 0 [ Cat1 and Cat6 ]I Have Sub categories of Cat1 Which has ParentID 1(CatID 1 of Cat1) [ Cat2 and Cat 3 ]Cat 2 has also sub category with ParentID 2 (CatID 2 of Cat2) [ Cat4 and Cat5]I want result looks like asCat1 Cat6 ->>>>>ParentID 0- Cat2 -Cat7 ->>>>>ParentID 1(CatID of Root Cat1) and ParentID 6(CatID of Root Cat6)- - Cat4 - -Cat9 ->>>>>PaerntID 2(CatID of Root Cat2) and ParentID 7(CatID of Root Cat7)- - Cat5 - -Cat10 ->>>>>PaerntID 2(CatID of Root Cat2) and ParentID 7(CatID of Root Cat7) - Cat3 -Cat8 -->>>>>ParentID 1(CatID of Root Cat1) and ParentID 6(CatID of Root Cat6)--No record --Cat11 Can anybody give me solution?Thanks
If i add a new table to my database with a stored procedure, using that same sp or another can i also add a 1-M relationship with another table that is currently in the database. Please if you can provide an example.
i want to insert null values into a column which is a foreign key It has relation form other table.Is it possible to insert null to such a field .if so please tell the synatax to insert(i mean the process)
Hello,I'm relative new to sql and databases and the last few weeks I learnedmyself a lot. I'm trying to make a hotel reservation application.I have a database with a table Booking, a table Room, a tableRoomsPerBooking. So a booking contains date/time etc and a fieldRoomsPerBookingID. The table RoomsPerBooking contains number ofpersons, unitprice etc. and a field ID and a field RoomID. The tableRoom contains data like name, notes etc.now i have two questions:First about relations:The table Booking has relationship: PK table RoomsPerBooking - ID <-->FK table Booking - RoomsPerBookingID.The table RoomsPerBookingID has relationship: PK table Room - ID <-->FK table RoomsPerBooking - RoomIDIs this relationset good for my purpose? I think it is, but I am notsure.The second question is:How do I get available rooms per nightI came this far.... what are the "some statements"?CREATE PROCEDURE dbo.GetAvailableRooms(@BeginDate DATETIME,@EndDate DATETIME)ASSELECT Room.*FROM RoomWHERE Room.ID NOT IN (SELECT DISTINCT room.IDFROM Room room JOIN RoomsPerBooking roomsPerBookingON room.ID = roomsPerBooking.RoomID--Some statements--WHERE booking.FromDate <= @EndDateAND booking.ToDate >= @BeginDate)GO
I have defined a relation between 2 tables in "database diagrams" (IDE)but when a fill my tables vith a sqldataadapter i obtaina tables without relations why??how i can reslve this problem?my code is:Dim da As New SqlDataAdapter("SELECT * FROM table1", cn)Dim ds As New DataSetda.FillSchema(ds, SchemaType.Source, "table1")da.Fill(ds, "table1")--> ds.tables(0).relations.count =0 !!!!!!!!????????!!!
HI!I have a ASPNETDB as my login databas. but now i want to connect this databas or the aspnet_user table to my table, how do i?I want to check the username in aspnet_user table and select the same username in my table?I want to write all sql code in a sql file. so i want to know how i can connect to the sql file from my c# code?I hope somebody understand me...
When we have Table1 and Table2, then we link both tables using a third table Table3 that relates n records in Table1 to n records in table2, how do we call Table3? There is a name in dataBase modeling for that, right?
hi, If I want to make one to many relationship, I put the pk of the parent as a fk in the child . like this customer table (cust_id, fname,lname) customer_order table(order_id,cust_id,qty,price)
I do understant this, but what about look up table, can I consider cust_id inthe customer_order table as a lookup field to the customer table?
