Separation Of Data And Code - Is It Possible?

Jan 23, 2008

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.

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Separation Of Log And Data Files

Sep 15, 2004

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).

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I just want to verify my understanding of schemas...



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The

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Afternoon.

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Oct 23, 2007

Dear 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
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How do i do this in a single query

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Thanks
gopalan@sofist.com
okugops@hotmail.com

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Apr 21, 2006

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I got this far but how (if it's possible this way) can I retrive it?
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If (e.Row.RowType = DataControlRowType.DataRow) Then
this is where i want to get the "MyData" value from the database.
End If
........
 
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<asp:TemplateField>
<ItemTemplate>   


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using VB..
 
 

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May 3, 2006

Hi

Background: I am a post-graduate student developing a model of the way HIV/AIDS spreads in communities. The data sets I am using are large (eg census data - 50m records) and the manipulation is complex (eg deciding which individuals will begin a sexual partnership, and with whom).

Problem: I need to process a table of data in code written in C# that will insert the results which are also a table of data into a table in the database.

In the example set up below, a table with rows comprising an Integer and a Real is the input. The output is a table where each row also comprises an Integer and a Real. Each row of input, say (Inti, Reali) leads to Inti rows of output. The example below gives a simple example of this.

The T-SQL code below sets up the problem, and includes simplest possible T-SQL that would lead to the requisite Output, so that you could compare your solution's code's with it:

-- Set up tables to use in example

CREATE TABLE InputTable

(

Int1 INT NOT NULL,

Real1 REAL NOT NULL

)

GO

CREATE TABLE OutputTable

(

Int1 INT NOT NULL,

Real1 REAL NOT NULL

)

GO

--Initialise the Input Table

INSERT INTO InputTable (Int1, Real1) VALUES (3, 0.5)

INSERT INTO InputTable (Int1, Real1) VALUES (5, 0.99)



--Manually put Data into Output table

--I do know how to code this in T-SQL using cursors and loops

--I wish to code this part in CLR

INSERT INTO OutputTable (Int1, Real1) VALUES (1, 0.5)

INSERT INTO OutputTable (Int1, Real1) VALUES (2, 0.5)

INSERT INTO OutputTable (Int1, Real1) VALUES (3, 0.5)

INSERT INTO OutputTable (Int1, Real1) VALUES (1, 0.99)

INSERT INTO OutputTable (Int1, Real1) VALUES (2, 0.99)

INSERT INTO OutputTable (Int1, Real1) VALUES (3, 0.99)

INSERT INTO OutputTable (Int1, Real1) VALUES (4, 0.99)

INSERT INTO OutputTable (Int1, Real1) VALUES (5, 0.99)

--This should show the output

SELECT * FROM InputTable

SELECT * FROM OutputTable

--The output should be

Int1Real1

3 0.5

5 0.99

Int1Real1

1 0.5

2 0.5

3 0.5

1 0.99

2 0.99

3 0.99

4 0.99

5 0.99

Additional Information: I would be grateful if your solution could indicate

* whether the code to be written is a class, stored procedure or user-defined function

* the answer could be included in entirity begining with "using system..."

* example T-SQL that can be used to execute the code

Current knowledge:I can write T-Sql. I have written C# user defined functions and stored procedures, assembled them and run them from within SQL-Server 2005.

Thanks in advance.

Greg

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========================================

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=========================

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