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The worst such solution occurs when the client application developer completely ignores SQL Server security and achieves database access using the sa login. I have seen two variants on this solution. One occurs when the developer hard-codes the sa password inside an application. The administrator is then prevented from changing the password (or the application will stop functioning) and the security of the entire SQL Server is exposed. The other occurs when a developer stores login information in a file or Registry so that it can be changed later. Unfortunately, it can also be read by unauthorized people, and again, SQL Server security is compromised.

SQL Server Enterprise Manager and Query Analyzer are the most important tools that the DBA will use to control the environment and manage stored procedures. We will review the ways that you can use Enterprise Manager and Query Analyzer to:

List stored procedures View stored procedures Rename stored procedures Delete stored procedures View dependent and depending objects

The easiest way to list stored procedures in a database is to view them from Enterprise Manager. All you need to do is follow these steps:

3:

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1. Open Enterprise Manager. 2. Expand the server group (click +). 3. Expand the server. 4. Expand the database. 5. Click the Stored Procedures node in a tree; Enterprise Manager lists the stored procedures in the Details pane (see Figure 3-4). There are two ways to list stored procedures from Query Analyzer . We have shown how to use Object Browser in a previous chapter. The traditional way is based on Transact-SQL. SQL Server is delivered with the system stored procedure sp_stored_procedures. It lists stored procedures in the current database: 1. Open Query Analyzer.

Figure 3-4.

Application roles are designed to implement security for particular applications. They are different from standard database roles in that Application roles require passwords to be activated. They do not have members. Users access a database via an application. The application contains the name of the role and its password. SQL Server ignores all other user permissions when the application role is activated. To create an application role, administrators should use sp_addapprole:

2. Switch the current database to Asset. 3. Set Query Analyzer to display results in a grid (Query | Results In Grid). 4. Type and execute sp_stored_procedures (Query | Execute). The program will show the list of stored procedures in the current database (see Figure 3-5). The stored procedure sp_stored_procedures retrieves a list of database objects from the sysobjects system table. If you want to see its contents, execute the following statement:

You can see the results in Figure 3-6.

Figure 3-5.

3:

Figure 3-6.

To see just user-defined stored procedures, you need to filter the database objects with xtype set to P :

Exec sp_addapprole @rolename = 'Accounting', @password = 'password'

Select * from sysobjects where xtype = 'P'

2:

We have already shown you in 2 how to display a stored procedure from Enterprise Manager. You just double-click its name and the program displays it in an editor. We have also shown that you can use Object Browser in Query Analyzer to achieve the same task. You just need to find the stored procedure in Object Browser, right-click, and then select Edit from the menu; Query Analyzer displays it in a new Query window.

It is little bit more difficult to display a stored procedure in the traditional way using Transact-SQL. You need to use the sp_help_ text system stored procedure. The database that contains the stored procedure must be the current database, and you must supply the name of the stored procedure as a parameter (see Figure 3-7).

NOTE: You can also use sp_helptext to view the code of other database objects such as triggers, views, defaults, and rules.

If you now want to save the code of the stored procedure, you can copy it through the Clipboard to your Query pane, or you can save Results from Query Analyzer in a text file: 1. Click the Results pane of Query Analyzer. 2. Select File | Save and specify a name for the file. Verify that the File Format is set to ANSI.

Figure 3-7.

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