Use a Fixed Server Role

... to a database or data within the databases. Fixed server roles are intended for administrators and assistant administrators and do not automatically grant access to any of the data that SQL Server ... 11.7 Use a Fixed Server Role Managing a server database engine such as SQL Server can be a time-consuming process. Administrative tasks include backing up the data, add...

Ngày tải lên: 07/11/2013, 15:15

... well as groups of users. • db_datareader. This role is able to view all data from all tables in the database. • db_datawriter. The db_datawriter role is able to add, update, or delete data ... different fixed database roles: • db_owner. As owners of the database, members of this role can perform any task that is granted to the other fixed database roles. The db_owner role...

Ngày tải lên: 14/12/2013, 20:16

... READUNCOMMITTED Same as NOLOCK. REPEATABLEREAD Use the same locking as a transaction with an isolation level of REPEATABLE READ. SERIALIZABLE Use the same locking as a transaction with an isolation level ... transactional integrity and database consistency by preventing other users from changing data being read by a user and preventing users from reading data being changed by a us...

Ngày tải lên: 17/10/2013, 20:15

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Ngày tải lên: 19/10/2013, 02:20

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Ngày tải lên: 19/10/2013, 02:20

... Country='USA' " + "ORDER BY CompanyName"; // Retrieve the plan into DataReader. SqlDataReader dr = cmd.ExecuteReader( ); // Iterate over all result sets and all rows to get plan. ... in Example 10-9 . Example 10-9. File: ShowPlanForm.cs // Namespaces, variables, and constants using System; using System.Configuration; using System.Text; using System.Data; using System....

Ngày tải lên: 28/10/2013, 18:15

... integrated security, you can pass your username and password to SQL Server and use those credentials to connect to the database. This saves you from providing a separate username and password ... ADO.NET automatically stores database connections in a pool. Connection pooling offers a great performance improvement because you don't have to wait for a brand new connection to th...

Ngày tải lên: 07/11/2013, 10:15

... breakpoint. • The database connection from your application must be established with the .NET data provider for SQL Server before debugging a mixed-language application. After that, you can open ... When a connection is obtained from the pool rather than created, SQL debugging is not reestablished. • Changes to locals or parameter variables that are cached by the SQL interpreter are not...

Ngày tải lên: 07/11/2013, 13:15