Restricting Data Access To System Database And Visibility To All Other User Databases...!

Jan 31, 2008

Hi,

How would I set permission for SQL Server 2005 "User A" to prevent access to System and other user databases, also How to hide the databases that "User A" has no rights to. I mean, when User A logs in, All other user databases are not visible to him/her.

Thanks,

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Hi,

I am using SQL Server Express Edition 2005 as a backend database working with Visual Basic 2005.

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I created a database in User-1 and works fine Visual Basic 2005.

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Thanks.

Regards
Kashif Chotu

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I have users logging into a sql database using sql accounts. I've created below a simplified example of three tables in my 100+ table database. I have a sql table that holds extra information about the sql users and two data tables. I would like to restrict which records the user has access to in the manufacturer and automobile tables. I know I can add the UserID column to these two tables, and then add the appropriate userID into the UserID column of the manufacturer and automobile tables. Hence records in the automobile table with userid X will not be seen by userid Y. My question is, how can I possibly avoid modifying 1000+ sql queries to reference the UserID column? It would save me a lot of time if I can filter the results a user gets based on thier sql login/userid.

+--------------------------+
+ USERS TABLE
+
+ USERID int
+ Name varchar
+ Telephone varchar
+
+--------------------------+

+--------------------------+
+ MANUFACTURER TABLE
+
+ MANID int
+ Name varchar
+
+--------------------------+

+--------------------------+
+ AUTOMOBILE TABLE
+
+ AUTOID int
+ Name varchar
+
+--------------------------+

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--
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Hi, my first question, tried to use search first but couldnät find what I need.

Hopefully someone has asuggestion.



I work for a ISV producing HR applications.

When user starts the applications the program shows all databases that the user have access to. This is done by select all names from master..sysdatabases and then trying to "USE dbname" to see if user have access,. Users doesn't have sa rights.



This procedure takes approximately 90 secs for a server with 500 databases and that has become a problem.



Does anyone know off a faster method, any suggestions?



/Regards Anders

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Hi all,
Can someone explain it to me  why I am getting the following error when I try to connect SQL server express with .NET 2.0?
 
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<%
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Nov 14, 2007



I want to give user

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write access: to tables only created by that user in a database

please help



Many thanks

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T.C.

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Kind regards
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I gave him access to one DB - TestDB- and made him data_reader on that DB. I had set that as his default database. However, when he logs in using SSMS he can see from Object Explorer a listing of all the databases on that server, although he can't access any of those. This is an external user and I don't want him to see any of that stuff, including other objects (SPs, Views, etc.,) even within TestDB.

To summarize, I want to grant access to a windows user to see/select from ONLY tables in TestDB of my production server, and I do not want him to be able to see any objects other than tables of this DB from SSMS.

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Hi all

Certain people in our company want to use Crystal Reports for data-processing. Problem is we want them to NOT be able to access data in databases within the live server.

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Hello everyone,

I have a design problem which I am hoping somebody can shed some light on.

I am running SQL Server 2000 using SQL authenticaiton (due to be changed to Windows authentication in the next 6 months). I have a table in my database which we shall call monthly. I want to restrict the ability to insert to the monthly table to 2 stored procedures (proc_abc & proc_xy) which I have written which do various other validation checks before it inserts the data into monthly.

Users with the Foo function assigned are able to execute proc_abc & proc_xy

I have written a VB application which can be used by users who are not familiar with SQL to be able to execute these stored procedures. (Must have Foo function in order to login to this application).

I want to restrict the ability to execute the stored procedures to users using the VB application only, and thus not be able to execute the stored procedure using Query Analyzer or such like for any Foo user.

Is there anyway I can do this?

One suggestion put to me is two split the functions. Have one function lets call it Top which can access the VB application and then have another function called Bottom which is able to execute the stored procedures. Only the VB app would have access to the Bottom credentials. But is this secure? Would I just hard code the credentials for the Bottom function user within the VB app? This doesn's seem a secure way of doing things to me.

Thanks for the help!

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Hi
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Jan 18, 2008



This is a slight re-stating from an older thread, which I think warrants some new discussion. The answer has always been that system administrators should have full access to everything on a system, including databases.

Although that is a logical position for internal IT departments it doesn't quite fit the model of systems with outsourced or external system support.


"If you don't trust your DBA, then you need a new DBA. They are in a position of authority for a reason and restricting that authority makes it impossible for them to do the job they are hired to do."

What about scenarios where you have local machine administrators that should NOT be given access to private data in a secured database, even though they need to be able to access and maintain everything else? And unfortunately some regulations are written about access to stored data whether encrypted or not...

In the modern world of Sarbanes-Oxley and PCI-DSS/CISP it is no longer so cut and dried. Especially where companies have software/hardware support contracts with third parties that require administrative access to other aspects of the systems.

So accepting that you might need someone to have administrative level access to the box but they should not be able to view the contents of a database installed on that box, what would you do?


Is there a way to create an adminstrative group that does not allow access to a specific named instance of SQL?

Is there a way to revoke access for one member of the administrators group only?


Thanks,
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Oct 30, 2007

Hi guys,

I've been developing desktop client-server and web apps and have used Access and SQL Server Standard most of the time.
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- The documentation for CE says that it supports 256 simultaneous connections and offers the Isolation levels, Transactions, Locking, etc with a 4GB DB. But most people say that CE is strictly a single-user DB and should not be used as a DB Server.
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- and further more can we use Enterprise Services (Serviced Components) to connect to SQL CE and further extend this model to offer a pure high-quality DB Server?
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Seems quite doable to me, but I may be wrong..please let me know either ways

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Aug 21, 2006

I have created a windows library control that accesses a local sql database

I tried the following strings for connecting

Dim connectionString As String = "Data Source=localhostSQLEXPRESS;Initial Catalog=TimeSheet;Trusted_Connection = true"

Dim connectionString As String = "Data Source=localhostSQLEXPRESS;Initial Catalog=TimeSheet;Integrated Security=SSPI"



I am not running the webpage in a virtual directory but in

C:Inetpubwwwrootusercontrol

and I have a simple index.html that tries to read from an sql db but throws

the error

System.Security.SecurityException: Request for the permission of type 'System.Data.SqlClient.SqlClientPermission, System.Data, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed.
at System.Security.CodeAccessSecurityEngine.Check(Object demand, StackCrawlMark& stackMark, Boolean isPermSet)
at System.Security.PermissionSet.Demand()
at System.Data.Common.DbConnectionOptions.DemandPermission()
at System.Data.SqlClient.SqlConnection.PermissionDemand()
at System.Data.SqlClient.SqlConnectionFactory.PermissionDemand(DbConnection outerConnection)
at System.Data.ProviderBase.DbConnectionClosed.OpenConnection(DbConnection outerConnection,

etc etc

The action that failed was:
Demand
The type of the first permission that failed was:
System.Data.SqlClient.SqlClientPermission
The Zone of the assembly that failed was:
Trusted


I looked into the .net config utility but it says unrestricted and I tried adding it to the trusted internet zones in ie options security

I think that a windows form connecting to a sql database running in a webpage should be simple

to configure what am I missing?

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Mar 25, 2008


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1 Has the current user been granted login access to the trusted SQL Server?

2 Has the current user been granted access to a specific database?

3 Is the current user a member of a specific database role such as (DB_ROLE_ADMINISTRATORS)?

Thanks,
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