saving updating and deleting data objects
Tài liệu Adding, Updating, and Deleting Related Rows In this section, you''''ll learn how to make changes in docx
... steps in the Main() method: Adding DataRow objects to customersDT and ordersDT Updating the new DataRow objects Deleting the new DataRow objects PushChangesToDatabase() is immediately called after ... Creating and Populating a DataSet Next, the following example creates and populates a DataSet named myDataSet with the rows from the Customers and Orders tables using customersDA and ordersDA: DataSet ... customersDT and ordersDT to the database: Push the DataRow objects added to customersDT to the Customers table Push the DataRow objects added to ordersDT to the Orders table Push the DataRow objects...
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Saving and Restoring Data
... XmlReadMode.ReadSchema Reconstructs the DataTable members of the DataSet without loading in the data Chapter 7 Saving and Restoring Data 111 ■■ XmlReadMode.IgnoreSchema Loads in the data, ignoring any schema ... data 118 Microsoft ADO.NET Step by Step Chapter Quick Reference To Do This Export a DataSet to a file as XML Create a DataSet instance Add all relevant DataTable, DataRelation, and content objects ... parent-child data Create a DataSet instance Add the relevant DataTable objects Add a DataRelation instance that links the tables Set the DataRelation.Nested property to True Call DataSet.WriteXml...
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Creating and Management Data Base
... trợ giải pháp máy chủ standby RDBMS and Data Management/ Session 7/18 of 25 Nhóm tập tin ghi vết giao dịch Thêm tập tin ghi vết vào sở liệu Cú pháp: ALTER DATABASE database_name { } [;] ::= ... tạo Cú pháp: CREATE DATABASE database_snapshot_name ON ( NAME = logical_file_name, FILENAME = ‘os_file_name’ ) [ , n ] AS SNAPSHOT OF source_database_name [;] RDBMS and Data Management/ Session ... COLLATE collation_name ] ] [;] RDBMS and Data Management/ Session 7/15 of 25 Nhóm tập tin ghi vết giao dịch Thêm nhóm tập tin vào CSDL có: Cú pháp ALTER DATABASE database_name { ...
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ĐỐI TƯỢNG DỮ LIỆU ACTIVEX (ACTIVEX DATA OBJECTS
... Jet/Access Client Application Remote Data Objects ActiveX Data Objects ODBC Driver OLE DB Data Provider ODBC Driver Manager OLE DB Document Server Email Server Relational Database Hình 11.1: Mô hình lập ... Command để nâng cao hiệu thông qua thuộc tính CommandType - Xác định số giây mà trình cung cấp phải chờ thi hành đối tượng Command thông qua thuộc tính CommandTimeOut Các kiểu đối tượng Command ... cmdByRoyalty = New ADODB.Command Set cmdByRoyalty.ActiveConnection = cnn1 cmdByRoyalty.CommandText = "byroyalty" cmdByRoyalty.CommandType = adCmdStoredProc cmdByRoyalty.CommandTimeout = 15 ' Định nghĩa...
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Tài liệu Managing and tabulating data in Excel docx
... tutorials, and numerous timesaving and annoyance-removing macros and utilities He plans to create a similar tool for Microsoft Excel, and, depending on resource constraints and demand, for PowerPoint, ... 12.7 Icons relevant to External Data 195 CHAPTER 13 13.1 Data from the Internet 195 READING ASCII TEXT DATA 198 Understanding ASCII Text data 199 Why is data stored and distributed in this format? ... “1995,” “2000” and “2010”) 2.2.A NEW DATA You can enter the data for a new case/row by clicking on “New” and typing in the data for the first series, pressing the “TAB and then entering the data for...
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Tài liệu Backups and Hidden Data doc
... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... understand the threats and have a chance at finding them Let’s learn a bit more about how data can be hidden on a computer system It makes sense for attackers or criminals to hide files and data ... with Windows and Unix OS • Viruses: File Infector and Boot Record Infector, Macro • Tools like CHKDSK and MEM may help locate malicious code • Files in DOS and Unix can be hidden and found using...
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Tài liệu Module 10: Backing Up and Restoring Data pdf
... for backing up and restoring data Module 10: Backing Up and Restoring Data Introduction to Backing Up and Restoring Data Slide Objective Backup To introduce backing up and restoring data Lead-in ... topics and objectives ! ! Backing Up Data ! Restoring Data ! In this module, you will learn how to back up and restore data Preparing to Back Up Data ! Lead-in Introduction to Backing Up and Restoring ... lost and corrupt data A user must have the appropriate user right or permission to back up and restore data Permissions and User Rights Are Required to Back Up and Restore Restore Restore Data...
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Tài liệu Module 4: Grouping and Summarizing Data doc
... the skills to group and summarize data by using aggregate functions These skills include using the GROUP BY and HAVING clauses to summarize and group data and using the ROLLUP and CUBE operators ... the skills to group and summarize data by using aggregate functions These skills include using the GROUP BY and HAVING clauses to summarize and group data and using the ROLLUP and CUBE operators ... summarize data by groups ! Use the ROLLUP and CUBE operators and GROUPING function to generate summary data ! Use the COMPUTE and COMPUTE BY clauses to generate control-break reports, grand totals, and...
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Tài liệu Java and XML Data Binding Brett McLaughlin Publisher ppt
... between data- driven and business-driven APIs and explains when one model is preferable over the other It then explains how constraint modeling fits into the data binding picture and how data binding ... open source data binding API, and this chapter details its ins and outs You'll see that Quick offers ideas and processes that are entirely different from most data binding frameworks and you'll ... Command lines and options that should be typed verbatim Names and keywords in Java programs, including method names, variable names, and class names XML element names and tags, attribute names, and...
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Tài liệu Executing a SQL Server Stored Procedure By Using ActiveX Data Objects doc
... prm = cmd.CreateParameter("CustomerID", ADODB.DataTypeEnum.adChar, ADODB.ParameterDirectionEnum.adParamInput, 5) cmd.Parameters.Append(prm) prm.Value ... MessageBox.Show(excp.Message) End Try End Sub The last thing that this routine does is open a recordset based on the Command object This is to the use just those records that are needed In this case, the GetString method...
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Tài liệu Analytical Methods: EViews and Panel Data ppt
... refer to variables by the first part name and the question mark Thus, if we type a command using GDP? EViews uses all three GDP series for the USA, Canada, and Mexico Notice the button PoolGenr PoolGenr ... coefficients and intercepts Even though you may fail to reject the hypotheses that represent restrictions that you impose, the hypotheses may not be perfectly true, and that may affect the estimators and ... Hypothesis Testing In panel data models (as in single-equation multiple-regression models) we are interested in testing two types of hypotheses: hypotheses about the variances and covariances of the...
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Tài liệu Backups and Hidden Data ppt
... my C:\ drive and typed in backup and sure enough, my Windows 95 box had a backup utility and it worked We were able to make a “backup” of Perl and write it to a couple floppies and restore it ... understand the threats and have a chance at finding them Let’s learn a bit more about how data can be hidden on a computer system It makes sense for attackers or criminals to hide files and data ... with Windows and Unix OS • Viruses: File Infector and Boot Record Infector, Macro • Tools like CHKDSK and MEM may help locate malicious code • Files in DOS and Unix can be hidden and found using...
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Tài liệu Module 5: Creating and Managing Recipient Objects pptx
... only add new objects to the directory using CSVDE However, you can use LDIFDE to add, delete, and modify objects Considerations for LDIFDE and CSVDE For both LDIFDE and CSVDE utilities and file formats, ... Properties dialog box a Expand Northwind Traders (Exchange), expand Servers, expand your_servername and then expand First Storage Group b Right-click Mailbox Store (your_servername), and then click Properties ... to: ! Create recipient objects, including mailbox-enabled users, and mail-enabled users, contacts, and groups ! Configure users, groups, and contacts ! Manage recipient objects by creating additional...
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Tài liệu Module 12: Integrating Collaboration Data Objects Within an Outlook 2000 Solution ppt
... Collaboration Data Objects Within an Outlook 2000 Solution Summary of CDO Object Functions Slide Objective To list the most frequently used CDO objects and collections Frequently Used CDO Objects and Collections ... collection contains Message objects, AppointmentItem objects, and MeetingItem objects This collection is used to get, create, delete, and sort messages, appointments, and meeting items Fields collection ... Rendering is to generate displayable output from CDO objects and properties The output is sent in HTML to a Web browser and is generated from objects and properties referenced in an asp file invoked...
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Tài liệu Consuming and Manipulating Data docx
... data from, modify data in, and update data sources The DataSet Class The DataSet is a collection of DataTable objects that represent the underlying data of a data source A DataSet has zero or ... XxxConnection and DataSet objects You use the XxxDataAdapter to populate the DataSet and to update the data source with any changes that have been made to the DataSet Some objects also have child objects ... OBJECTIVE 6.01 Data Access with ADO.NET ADO.NET has evolved from a combination of DAO (Data Access Objects) , VBSQL (Visual Basic SQL), RDO (Remote Data Objects) , and ADO (ActiveX Data Objects) , but...
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Tài liệu Adding, Modifying, and Removing DataRowView Objects from a DataView docx
... AddModifyAndRemoveDataRowViews { public static void DisplayDataRow( DataRow myDataRow, DataTable myDataTable ) { Console.WriteLine("\nIn DisplayDataRow()"); foreach (DataColumn myDataColumn in myDataTable.Columns) ... ADDMODIFYANDREMOVEDATAROWVIEWS.CS /* AddModifyAndRemoveDataRowViews.cs illustrates how to add, modify, and remove DataRowView objects from a DataView */ using System; using System .Data; using System .Data. SqlClient; ... modifies, and removes DataRowView objects from a DataView This program also displays the IsNew and IsEdit properties of the DataRowView objects, which indicate whether the DataRowView is new and is...
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Tài liệu Filtering and Sorting Data pptx
... sorts the data in DataTable objects in the DataSet The DataViewManager can simplify working with multiple views within a DataSet, but is not required The DataViewManager object exposes a DataViewSettingCollection ... dvm.DataViewSettings[ORDERS_TABLE].RowFilter = employeeIdFilter; // Bind the DataViewManager to the grid dataGrid.SetDataBinding(dvm, CUSTOMERS_TABLE); } Discussion The DataView filters and sorts ... private DataSet ds; // private void FilterSortForm_Load(object sender, System.EventArgs e) { ds = new DataSet( ); SqlDataAdapter da; // Fill the Customers table and add it to the DataSet da...
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Tài liệu Java and XML Data Binding ppt
... between data- driven and business-driven APIs and explains when one model is preferable over the other It then explains how constraint modeling fits into the data binding picture and how data binding ... open source data binding API, and this chapter details its ins and outs You'll see that Quick offers ideas and processes that are entirely different from most data binding frameworks and you'll ... Command lines and options that should be typed verbatim Names and keywords in Java programs, including method names, variable names, and class names XML element names and tags, attribute names, and...
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