I just want to verify my understanding of schemas...
Using separate schemas to segregate data is only a logical mechanism. Separate schemas do not physically segregate data onto different groups of pages or files. Partitioning is the mechanism for physical segregation of data.
Is that everyones understanding as well?
We have a system that uses 3 databases, one for Membership db standard MS membership only the application has access to that data, one with User Data which we would like to make multi-tenant using Schema-Separation, and a third read-only reference db which is Common Market data for all users.we anticipate Tenant numbers in the thousands.Current we have multiple queries which create joins between the Main db and the Reference database using something like
Selec S.*, M.ScheduleDate, M.substation from Sites S left outer join Market.dbo.MarketUnit M where S.MarketUnitID = M.MarketUnitID
i'm planning to have a new schema for each Tenant on the Main Database, so I would create a Schema T1 for the first customer, a user T1User with access to T1 schema. and grant T1User access to Market.dbo. My First question is are there any concerns about the above T1User setup? My second question is, are there any tools which would automate the setup of the multi-tenant with schema separation, or should I just script the whole Main Database schema creation and replace schema name globally and then execute the script?
My Third question, how about upgrade and updates... currently using VS to compare dev/qa/prod database to identify changed which need to be promoted, and pushing updates... this could be a big pain to promote code to thousands of Schemas. grantedwe will likely keep the overall number of schemas spread over different SQL servers.
I'm kind of new to sql server (but experienced in Oracle) and I've got a couple of questions I wanted to bounce off you guys.
I'm implementing a SQL server cluster right now (2 node on Win2K3, shared EMC DASD for databases). We're at the very preliminary phase of this. I did an install and had my resource group set up with all of my disks on it. When prompted for the data file drive, I gave it one, but it put all the tlogs for the 'out of the box' database on that same drive as the data files (i.e. master, model, tempdb, etc.). The doc is a little vague in some of these areas (i.e. it says separate logs and data files on different disks, but then never actually tells you how to do that).
Now, I know how to specify the default paths for data and transaction logs for any NEW database I create and that's not a problem. However, my question is, how do I 'move' the tlogs from the databases created during the install? I've tried a detach, move tlog to separate physical drive and then reattach the db, but whenever I do this, SQL server wants to create a new tlog for the db on the same old drive as the datafile. I also can't delete the original tlog from a particular database even after I've created an additional tlog on another disk.
Any help is much appreciated. I'm more or less looking for the strategy any of you might take to set up this initial phase.
We have an environment/application where we have separate databases for different clients. Each database is pretty much a copy of the other - i.e. same tables, same stored procs, and a few reference tables whose data content is the same across all the dbs - except for that client's data in the user tables.
The issue we have is one of maintenance and growth. We wanted separated DBs so the amount of data in one would not result in performance issues for another client among other things (security and geographical separation for example). However, now that we are adding more clients the deployment team has to apply changes (schema chagnes, stored proc modifications) to each and every database. Does SQL (2005 SP2 in our case) support a concept of shared resources like schema, stored procs, user functions, and even a few tables but separate out the data for other tables? That way the schema, reference data changes have to done in one place...
Thanks.
Hello,
I would like to use SSIS tool to move the data from one database schema to another database schema.
For example:
Source table has
1. UserName (varchar 20) (no null)
2. Email (varchar 50) (can be null)
Destination table has
1. UserID (uniqueidentifier - GUID)
2. UserName (varchar 50) (no null)
3. EmailAddress (nvarchar 50) (can be null)
4. DateTime
Questions:
1. What controls do I use in my Data Flow to make data move between databases with different data types and include new value in UserID as a new GUID and DateTime as a date (GETDATE)?
OLE DB Source, OLE DB Destination, Data Converson and .....
How do I insert Guid and Date at the same time?
2. I have many tables to do data moving. Any sugestions? How do I architect my project? If I create many data flows for each table - it will look complicated.
Please give me some advices here.
Thanks.
Hi all
Do we have provision of separating sa and sso role in SQL server as we have in sybase? ( In such a case, sa shouldn't have any control on creating/modifying users/logins)
Thx
Wilson
I am new to SQL and, unfortunately, actually do my work in Access 2003, but I have a question.
This is an example of what the data I am working with looks like:
AALADIN
AA-TACH EH65X, EH65V (V-Twin)
AA-TACH w/Robin 20 & 20.5 h.p. OHV
AA-TACH w/Wisc.-Robin EY21
ABI CONTRACTOR w/Honda 20 h.p. (V-Twin)
The all caps text strings at the beginning of the field need to end up in a separate field than the mixed strings, and the mixed strings need to stay together. The field length varies, as do the lengths of the all caps text strings. There are a lot of records, so I would be interested to know if there was a way to proceed without manually editing each line.
The
Afternoon.
I have a client who is in the market for a dedicated SQL box. It's a smaller company of 50 users. The primary task of this machine is a backend for Sharepoint 2007. At first I'm stuck using MSSQL 2000 for a few months until the budget can be approved to upgrade them to 2005.
I intend to spec this machine out for 2005, the question I have at the moment pertains to the HD configurations.
How would you recommend rigging that up?
Mirror for system, Mirror for the data store, mirror for transaction/temp files?
Put everything on a Raid-5 and forget about it?
I also have a question about Quad Core processors. How does MS sql's licensing work on that?
I guess I just don't get the reasoning behind the new SqlDataSource control. Haven't we just spent the last decade or so evangelizing and learning how and why to separate business logic from the display in VB 6 and VS.NET? In this age of programming for disparate devices (desktop, mobile, PocketPC, etc.) when this separation makes more sense than ever, why is MS pushing us to go back to putting our logic and data access rules and objects back in the display? It doesn't make sense. Why would anyone do this? And why would all the experts and MVPs at ASP.NET, DevX, 4GuysFromRolla, etc., go along with this?
View 4 Replies View RelatedDear all,
I have a table like:
State -- Customer
TN -- AAA
TN -- AAA1
TN -- AAA2
Delhi -- BBB
Delhi -- BBB1
Delhi -- BBB2
Mumbai -- CCC
Mumbai -- CCC1
Mumbai -- CCC2
Maharashtra -- DDD
Maharashtra -- DDD1
Maharashtra -- DDD2
I want to show the output in a single query like:
State -- Customers
TN -- AAA, AAA1, AAA2
Delhi -- BBB, BBB1, BBB2
Mumbai -- CCC, CCC1, CCC2
Maharastra -- DDD, DDD1, DDD2
How do i do this in a single query
Can Pivot query will help in this situation. Please explain with a sample query
Thanks
gopalan@sofist.com
okugops@hotmail.com
Hi,
i need to move the data and schema from 6.5 to 7.0. could you please tell me the most simple way.
thank you
raju
Locally I develop in SQL server 2005 enterprise. Recently I recreated my db on the server of my hosting company (in sql server 2005 express).I basically recreated the tables and copied the data in it.I now receive the following error when I hit the DB:The 'System.Web.Security.SqlMembershipProvider' requires a
database schema compatible with schema version '1'. However, the
current database schema is not compatible with this version. You may
need to either install a compatible schema with aspnet_regsql.exe
(available in the framework installation directory), or upgrade the
provider to a newer version.I heard something about running aspnet_regsql.exe, but I dont have that access to the DB. Also I dont know if this command does anything more than creating the membership tables and filling it with some default data...Any other solutions/thought on what this can be?Thanks!
I just got hold of this article at Microsoft and I will try it out at once.
http://www.microsoft.com/downloads/details.aspx?FamilyID=16d8c1e9-a6a3-43a2-9ba7-916c6eb5023b&DisplayLang=en
Peter Larsson
Helsingborg, Sweden
Well I have NO IDEA how to do this... so I'll just admit my ignorance up front.
Anyway I have some customer records that need to be sent off for mailing.
The printing company takes XML files.
They provided me with an XML Schema (.xsd file)
I need to take the data in my table and export it to an .xml file to send off.
I tried doing something like this at first:
WITH XMLNAMESPACES (DEFAULT 'urn:blah.blah.blah...')
SELECT *
FROM
(SELECT CONVERT(varchar, GetDate(),120) AS submit_date,
'999999' AS client_billing_id,
customers.FirstNm AS customer_first_name,
customers.LastNm AS customer_last_name,
.....blah...additional fields..
FROM customers
) As Offset
FOR XML RAW ('Customer'), ROOT('CustomerMailingList'), ELEMENTS
Now that worked pretty well, it gave me a file that was formatted in what appeared to be the proper XML style, and I could save it and it "looked right".
However, the printers said there were a few errors and sent back a .XSD schema file for me to use.
Sounds great... but I haven't a clue on how to use it.
I've seen a few articles on how to manage existing schemas and how to store data IN the database, but nothing on how to EXPORT data.
As I understand it I just want to take data in my customers table and use the schema as a template / file mapping document to dump it out to XML.
So... help? :)
Thanks
This is a totally newbie question, but...
I've create a database, I'm able to script the schema to a query window, file, etc.
I can't for the life of me find out how to export my data so that it is scripted into insert statements. The data is standardized lists of data I will be distributing with the DB.
For those of you familiar with mySQL, this would be the output of the mysqldump command which dumps schema and data all into one file
mysqldumb <db> -u user -p > mydatafile.txt
thanks,
-David
Hi All,
I want to migrate data from old DB to New DB. New db is having schema changes. For e.g Table A in Old DB is split into
two tables A1 and A2 in new DB. I want to copy some columns from Table A to A1 and some into A2. A2 is having relation with A1(A1's ID is FK in A2). I want to insert records into A1 and using the identity column of newly inserted record, i want to insert the record into A2. Please guide me how can i do this with SSIS.
Thanks in Advance
Devika
I have 35+ tables and 15+ stored procedures with SchemaA, now I want to transfer them to SchemaB.
I know how to do one by one...!
alter schema SchemaB transfer
SchemaA.TableA
but it will take long time...!
Thanks,
I have a database DB1 and DBTest
DBTest Database is empty. I want to copy all the objects in DB1 - schema1 how can I do that?
Hi,
I have a table 'TEMP' which owns by user 'SCOTT'.
I logined using the user 'SCOTT' and try to fetch the data without specifying schema name.
select * from TEMP.
Msg 208, Level 16, State 1, Line 1
Invalid object name 'TEMP'.
I getting the above error.
while i execting with schema name.
select * from scott.TEMP.
I getting the required output.
Is it possible to fetch the data without specifying schema name??
Plz help me.
The owner of the table TEMP is scott.
I have a schema/user called mstp who has tables in another schema/user. How do I prevent the mstp user from seeing those tables/data that do not belong to their schema?
example:
database xxxx has tables som.employees and mstp.employees The mstp user should only allowed access to mstp.employees and nothing else.
thanks.
Hi,
i have the following requirement
Can a stored procedure in SQL Server 2005 generate XML data based on the schema, We don't prefer to manually build an xml string inside the stored proc?
Is there any SQL Server 2005 feature to do it if possible?
i appreciate your help.
Thanks,
Vaishu
Just wondering if there are any tools available for SQL Server 2005 which allow the comparison and scripting of data and schema between two databases. This is so that I can migrate between Dev, QA, and Live easily.
A free tool would be best please..
Thanks in advance.
Gaj
I've been testing a variety of database schema migration tools. Ourcompany purchased Embarcadero Change Manager a while ago but we'vebeen less than satisfied with the results.We are looking for a tool that can compare a source/developer databasewith a target/client database and then make the necessary changes.The tool will need to update stored procedures, tables, indexes,constraints, etc. The tool will also need to make the changes in thecorrect order based on dependencies and relationships.Anyone have any recommendations?
View 1 Replies View RelatedHi,
Recently I had the following error when I tried to run an update command:
0xC020906A The data value violated the schema constraint
At the end of a data flow I wanted to do an update on the data I gathered during that data flow.
The sql-command was something like:
"Update MyTable set aField=? where theID = ISNULL(?,-1)"
Apparently SSIS doesn't accept a null value to be placed in the parameter or am I totally wrong (and I hope I am)? Maybe I have to change the sql-command, if so, please tell me.
Anyway, I replaced all the null values by a -1 via a Derived Column task before entering the command task and the problem was solved.
Greets,
Tom
Hi all.
I 'm trying to set up merge replication between two servers that have the same schema databases. The two database have the majority of there data the same but as well as data inserted at a later time independently on the two servers. (The two servers were connected in a merge replication scheme that failed at some later time and replication was paused, but users continout to insert data indepentedly at the two servers.)
I need to get them up and running.
I cleaned replication at both servers, I recreated the publication at the puplisher distributor and all is fine.
When I create a push subscription to the subscriper I get the error invalid column name 'rowguidcol' .
I so far managed to have merge replication running on two identical databases (schema and data).
Just some thoughts. After some reading I found that it might be related to identities and identity range or indexes. I set the identity seed and increment at 2, 2 at publisher and at 1,2 at subscriper. (On the same tables at puplisher and subscriber.) Is that ok? is that the way to do it?
Digging a bit more Using the SQL Profiler I can locate the error to happen when sp_MSaddmergetriggers executes.
Thanks allot for any help
Version.
Microsoft SQL Server 2000 - 8.00.2039 (Intel X86) May 3 2005 23:18:38 Copyright (c) 1988-2003 Microsoft Corporation Standard Edition on Windows NT 5.0 (Build 2195: Service Pack 4)
Hi,
How can I save and load data with schema in MSDE in the quickly way? I need to do this in 5-10 second for 5 millions of rows.
Thank's
Alexei
Hello everybody!I'm using ASP.NET 3.5, MSSQL 2005I bought virtual web hosting .On new user registrations i have an error =(The 'System.Web.Security.SqlMembershipProvider' requires a database schema compatible with schema version '1'. However, the current database schema is not compatible with this version. You may need to either install a compatible schema with aspnet_regsql.exe (available in the framework installation directory), or upgrade the provider to a newer version. On my virtual machine it work fine but on web hosting i have an error =(What can you propose to me?
View 2 Replies View RelatedHi All,
I'm stuck up with a strange problem.
When i try to setup a Transform Data task in DTS, the table drop down shows fully qualified table name.
i.e. <database name>.<schema name>.<table name>
as you can see in the attached screenshot. With this I cant see the full table name and am not able to make the correct selection.
Where can i change the properties so that it displays only the table name?
Thanks
Rohit
Good morning,
I have a table that I am including in replication. However, I do NOT want the data for one of its columns to be included in the replication. Meaning, I want all of the schema and all of the data EXCEPT for a single column.
How do I do this?
I have searched the forum for some ideas, but did not find any.
Thanks in advance...
Ok so i've got a database containing a table called Quote.
I need one of the field's datatype to be Boolean?
which option do i choose?
and also is there a way to make the Key Field auto increment?
And is the datatype: ntext, the correct option for a text only field?
thanks
We have a commercial VB.NET winforms client/server application that utilizes SQL Server 2005 express edition. The schema and data that the application utilizes is proprietary and could be very damaging if it got into a competitors hands.
Is there any way to protect the data and schema of a sql server 2005 express edition database?
Will this functionality ever be added?
Thanks
Till recently we were using the following code to retreive schema information of columns of tables
Dim schemaTable = connection.GetOleDbSchemaTable( _
System.Data.OleDb.OleDbSchemaGuid.Columns, _
New Object() {Nothing, Nothing, tableName, Nothing})
Now instead of getting the name of table (which i was using as param for filtering) i'm going to receive a sql-query. Now my question is if I were to get a query like the following :
SELECT
[EmployeeID],
[Title] + ' ' + [LastName] + ' ' + [FirstName] AS FullName,
[BirthDate],
[Address],
[City] + ', ' + [Region] + ', ' + [Country] + ' - ' + [PostalCode] AS FullAddress
FROM [dbo].[Employees]
Then how can I retrieve the schema information of only the columns present in the query.
(Its possible that i might get a query with multiple tables with joints)...
Is it possible to get data-type,default-value, etc. (basically schema information) of columns in a particular query.This is something similar to what we get when we execute the following
SELECT *
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = 'Employees'
But instead of TABLE_NAME i would like to give a query like
SELECT [EmployeeID],[LastName],[FirstName] from [dbo].[Employees] order by [EmployeeID].