An administrator can grant (R), deny ( ), or revoke (Q) permissions. in .NET framework

Creator Data Matrix 2d barcode in .NET framework An administrator can grant (R), deny ( ), or revoke (Q) permissions.

An administrator can grant (R), deny ( ), or revoke (Q) permissions.
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SQL Server 2000 Stored Procedure & XML Programming
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Grant Statement To grant statement permission, an administrator can issue a Grant statement with the following syntax:
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Grant {ALL | statement_name_1 [, statement_name_2, statement_name_n] } To account_1[, account_2, account_n]
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To grant object permission, an administrator can issue a Grant statement with the following syntax:
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Grant {All [Privileges]| permission_1[,permission_2, permission_n]} { [column_1, column_2, column_n] ON {table | view } | On {table | view } [column_1, column_2, column_n] | On {stored_procedure } } To account_1[, account_2, account_n] [With Grant Option] As {group | role}
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The following statement allows JohnS (SQL Server login) and TomB from the Accounting domain (Windows domain user) to create a table in the current database:
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Grant Create Table To JohnS, [Accounting\TomB]
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The following statement allows members of the AssetOwners role to view, store, delete, and change records in the Inventory table:
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Grant Select, Insert, Update, Delete On Inventory To AssetOwner
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When you grant a user object permission using WITH GRANT OPTION, the user will also be able to grant that permission to other users:
GRANT SELECT ON Contact TO roleHR WITH GRANT OPTION
Deny Statement The Deny statement is used to explicitly negate permissions. Its syntax is basically the same as the syntax of the Grant statement (except that the keyword Deny is used).
10: Interaction with the SQL Server Environment
The following statement prevents TomB from the Accounting domain from creating a database:
Deny Create Database To [Accounting\TomB]
The following statement prevents JohnS from deleting and changing records from the Inventory table, even though he has inherited rights to view, store, delete, and change records as a member of the AssetOwners role:
Deny Update, Delete On Inventory To JohnS
A Deny statement, even at the user level, will supercede all Grant permissions, whether at the user or role level. Revoke Statement The Revoke statement is used to deactivate statements that have granted or denied permissions. It has the same syntax as the Grant and Deny statements (except that the keyword Revoke is used). It is easy to understand that permission can be removed using the Revoke statement. It is a little more challenging to understand how a permission can be granted by revoking it. To help you understand this concept, consider the following example in which a user, JohnS, is a member of the AssetOwners role, which has permission to insert, update, select, and delete records from the Inventory table:
exec sp_addrolemember 'AssetOwner', 'JohnS',
The administrator then decides to deny JohnS permission to delete and update records from Inventory:
Deny Update, Delete On Inventory To JohnS
After a while the administrator issues the following statement:
Revoke Update, Delete On Inventory To JohnS
In effect, this command has granted Update and Delete permission on the Inventory table to JohnS.
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Since the Revoke statement removes records from the sysprotects table in the current database, the effect of the Revoke statement is to return permissions to their original state. Naturally, this means that the user will not have access to the object (or statement). In that respect, its effect is similar to the Deny statement. However, there are two major differences between revoked and denied permissions: the Revoke statement does not prevent permissions from being granted in the future; and the Revoke statement doesn t supercede any other granted permissions provided by membership in other roles, whereas Deny does supercede those permissions.
Synchronization of Login and Usernames
11 discusses in detail deploying/moving databases from one server to another. The problem you will encounter in this situation is a mismatch between users and logins. This problem is a result of the fact that records in the sysusers table of the copied database point to the records in the syslogins table with matching sid fields. Unfortunately, same sid value might be used by different logins on two different servers. It is also possible that login with specific sid value does not yet exist on a new server. One solution is to create and manage a script that re-creates logins and users on the new server after a database is copied. Another solution is to dynamically assemble a script to create logins on the target server:
SET NOCOUNT ON SELECT 'EXEC sp_addlogin @loginame = ''' + loginname + '''' ,', @defdb = ''' + 'tempdb'+ '''' ,', @deflanguage = ''' + language + '''' ,', @encryptopt = ''skip_encryption''' ,', @passwd =' , cast(password AS varbinary(256)) ,', @sid =' , sid FROM syslogins WHERE name NOT IN ('sa') AND isntname = 0 SELECT 'EXEC sp_grantlogin @loginame = ''' + loginname + '''' FROM syslogins WHERE loginname NOT IN ('BUILTIN\Administrators') AND isntname = 1
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