Tài liệu Getting a Sequence Value from Oracle pdf

... Team LiB ] Recipe 4.4 Getting a Sequence Value from Oracle Problem When you add a row into an Oracle table that uses a sequence to generate the value for a primary key column, the value assigned ... the DataTable is replaced by a value generated by the database. You need to retrieve the new value to keep the DataTable synchronized with the database. Sol...

Ngày tải lên: 21/01/2014, 11:20

... [ Team LiB ] Recipe 9.10 Retrieving a Single Value from a Query Problem Given a stored procedure that returns a single value, you need the fastest way to get this data. Solution ... ExecuteScalar( ) method to return a single value from a stored procedure. The sample code uses the ExecuteScalar( ) method to get the number of records in the Orders table of the Nor...

Ngày tải lên: 14/12/2013, 18:16

... DataAdapter is created and used to fill the DataTable. The insert command and its parameters are defined for the DataAdapter so that new rows can be added to the data source. An event handler ... Creates a new row in the Categories DataTable using the entered CategoryName and Description values and the automatically generated CategoryID field. The Update( ) method of the DataAdapter .....

Ngày tải lên: 21/01/2014, 11:20

... the plan for. cmd.CommandText = "SELECT * FROM Customers WHERE Country='USA' " + "ORDER BY CompanyName"; // Retrieve the plan into DataReader. SqlDataReader ... 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.Data...

Ngày tải lên: 26/01/2014, 10:20

... provide an alternative interface. Media management layer interfaces to popular third-party tape management products are available. Legato Storage Manager is provided free with both Oracle8 and the Oracle8 ... maintenance operations. Partition operations can be performed in parallel. Partitions increase availability by isolating media and application failures—applications not requiring data...

Ngày tải lên: 09/12/2013, 17:15

... Pass a Dataset Back from an XML Web Service I want to be able to get more data than just a single value. How do I retrieve a whole dataset from a Web Service? Technique When you need to pass ... need to pass back a record or multiple records from a Web Service, you have to pass it back as a DataSet object, rather than a DataTable object. For this How-To, you will...

Ngày tải lên: 24/12/2013, 06:17

... System.Data.SqlClient.SqlDataAdapter mySqlDataAdapter = new System.Data.SqlClient.SqlDataAdapter(); mySqlDataAdapter.SelectCommand = mySqlCommand; MyDataSet myDataSet = new MyDataSet(); sqlConnection1.Open(); ... MyDataSet(); You can also create a strongly typed DataTable table object using the MyDataSet.CustomersDataTable class and populate it with rows from the Customers tabl...

Ngày tải lên: 21/01/2014, 07:20

... contains an Always Cache meta-tag. This scenario hardly occurs, and for performance reasons, you should carefully evaluate caching of dynamic content.  HTTP Request Headers. ISA Server bypasses ... size of the varying header and its value.  Headers added by the ISA Server for caching. ISA Server adds the Age header to all objects served from the cache. The Age header indicates h...

Ngày tải lên: 10/12/2013, 22:15

... individual? What percentage of the books was loaned out at least once last year? What percentage of all loans eventually becomes overdue? What is the average length of a loan? What are the library’s ... title_no on_loan Library Database Diagram 2 Appendix A: Library Database Case Study Daily Library Functions Many daily library functions exist. The following are some of the mo...

Ngày tải lên: 11/12/2013, 14:15

... subnet 0 has become more common. The labs in this manual assume that you can assign addresses to the router’s interfaces using subnet 0. If you use any routers that have an IOS earlier than 12.0, ... configurations. You need to create a text file that can be pasted into your labs and used as a starting point for your router configuration. Specifically, you must build a login configu...

Ngày tải lên: 11/12/2013, 15:15