Schemas - A Brief Introduction ?

Jan 7, 2006

Hello

Can anyone give an introduction to the use of schemas i SQL Server 2005. If have noticed the feature, but i would like to know why and how the use of schemas is a good thing.

If anyobe has a link to a whitepaper or practical insight that would be nice.

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Introduction To SQL

Jan 14, 2007

I've put together a very basic introduction to SQL on my Blog. This was mainly for co-workers who needed SQL basics. There is also an excellent online tutorial that walks you through SQL basics and lets you practice online using an SQL interpretor on the website.

Introduction to SQL

Check it out and let me know your feedback.



Blog: http://mycodeblog.blogspot.com/

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Jan 28, 2008

I'm trying to understand the schemas in SQL Server 2005. I have a script which was given to me by someone as follow and I'm trying to run the script but it gave me an error at the create view section:

Assume an empty database has been created.

CREATE SCHEMA [mySchema] AUTHORIZATION [dbo]
GO

CREATE TABLE [tblABC] ( ... ) /*note: it didn't bind the table to the above schema*/

create view mySchema.vwMyView as
SELECT * FROM mySchema.tblABC
GO

However I'm confused because the above CREATE VIEW made a reference to the table with the schema. Can someone help clarify. When i tried to create the view, it gives me an error that it is unable to find the mySchema.tblABC table. To me, the error is correct as per my understanding of binding a table to a schema ---> If you do not create a table and bind it to a schema, you are not able to call it together with the schema.

What I'm trying to understand is, without explicitly stating [mySchema] during the table creation, is there a way where it is mysteriously binded thus the CREATE VIEW somehow understood that tblABC has been binded therefore it called the table in the view? or is this just a script error.

Btw, this script was generated from a working database.

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Mar 1, 2001

Hi Guys,

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Thanks in advance !-)

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Dec 27, 2007



Hi,

I wanted to find out what the statement is for finding out the number of schemas in all your databases.

I know in 2005 the you can do a select * from sys.schemas

but how do you achieve the same thing in sql server 2000 ?

Please let me know..

Thanks,

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Dec 26, 2007



Hi,

How do I find out the number of schemas in sql server 2000 and 2005 for each database?

Also, how can i find the number of tables in each database?

I'm trying to figure this out but can't find anything on google.

Please help.

Thanks,
Kapinak

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Apr 25, 2007

I have schema called [sitex] for some tables .
I have to perform insert or update operations in to these tables through views only and these views were created with [site] schema

All stored procedures are written in the point of view only ( all DML operations into the tables are through views).and these stored procedures has schema same as views.

Now come to the permissions and authorization.

We have some users like sa,112,janu

These users must have permissions only on site schema not on [sitex].
I have a role called €œtestrole€? with 112,janu users and I gave authorization on site schema on for testrole

ALTER AUTHORIZATION ON SCHEMA::[site] TO [testRole]
Now I€™m getting error select permessions are denied on [sitex] schema.

But our requirement is 112 must don€™t have any type of permissions on tables

And also is there schema to schema permissions. (that mean [site] schema has permissions on [sitex] schema .

PLZ help me

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Nov 27, 2006

I'm trying to find some documentation or procedures that will allow me to xfer existing users' roles, etc from sql2000 to sql2005.
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I have some tables sitting in schema "A", then I created a view in schema "B" based on the tables in schema "A". Then I gave the user just access to schema "B" to only run the view but not see the tables in schema "A".

Could it be that if the user tried to ODBC to that db, they would only see the view in schema "B" and not the tables in schema "A"?

Thanks!

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Apr 28, 2008

Hey folks,

I'm looking to gather ideas on this before I start the project; so what better way to start than to ask here? ;)

The situation is this: we are in the process of replacing a large data driven application with a new one. Before turning the old'un off (that's not for a minimum of 6 months), we need to migrate data between the two entirely different schemas, and I've been tasked with writing the interfaces.

Now, here comes the kicker; they don't just want a "straight-forward data conversion", they want to run a period where they can still update both databases and any changes in the old one are to be pushed into the new db.

Because the schemas are not the same, I believe replication is out of the question so I was looking for advice as to what possibilies I have ahead of me to achieve this.

I fear I may not have expained this well enough; so as always if there are holes in the detail let me know and I'll do my best to fill them in :)

Old db = SQL Server 2000
New db = 2005

Thanks,
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I've a database and 4 different applications that will use it, and every application will create a new database every year, for example, i'd like to use the following schema:

MainDatabase.MyApplication.MyYear.MyTable

In MS SQL i've created my main schema using:

USE Mydatabase;
CREATE SCHEMA MyApplication
GO

Now I want to add sub-groups (in this example, I need to create Year2006, Year2007, and so on).

Even If i create those schemas, how can I "add" them inside the Salary main schema?
I've tryed with
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but it doesn't work since Year2006 is not an object.

Thank you!

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Program.dbo.table1

vs.

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Oct 24, 2007

Hi,

I am looking for some advice on securing a sql 2005 database.

I have a database to which I want to grant 3 different users access.

The first users, who we will call 'public' should have access to a set of stored procedures, and no access to tables without using the stored procedures they have access to.

The second users have again got access to a certain set of stored procedures, along with the stored procedures for 'public'. These should be called 'moderator'.

Finally the third set of users 'admin' should have access to all stored procedures, but again no access to the database unless its through a stored procedure.

Questions :

Using SQL 2005, how do I assign access to particular stored procedures to a user?

How do I ensure that a 'user' cannot access stored procedures I don't want them to access?

Some of the stored procedure use dynamic sql within them, will this affect my setup. If I deny direct access to the tables to all three users, but allow them access the stored procedures, can the stored procedures access the tables?

If schemas are the answer, how on earth do I set them up, Ive never seen something so badly documented online in my experience! In my development environment im using sql express, so will probably working through the query analyzer.

Thanks in advance.

Conor

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dbo.tableA
sch1.tableA
sch2.tableA
sch3.tableA
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Would please recommend any other way to achieve this.
Many Thanks in advance

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Thanks,

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I'm trying to find some documentation or procedures that will allow me to xfer existing users' roles, etc from sql2000 to sql2005.

When our sql 2005 database was restored on a new server (from sql2000), all of the database users were orphaned. I need to create identical server logins and then make the logins database users. It is also important to understand the significance of the new schema concept. The Microsoft SQL2005UpgradeTechRef.doc white paper does not explain any of this.

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Regards
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