1.  2006 Pearson Education, Inc. All rights reserved. 1 20 Database, SQL and ADO.NET

2.  2006 Pearson Education, Inc. All rights reserved. 2 It is a capital mistake to theorize before one has data. — Arthur Conan Doyle Now go, write it before them in a table, and note it in a book, that it may be for the time to come for ever and ever. — Holy Bible, Isaiah 30:8 Get your facts first, and then you can distort them as much as you please. — Mark Twain I like two kinds of men: domestic and foreign. — Mae West

3.  2006 Pearson Education, Inc. All rights reserved. 3 OBJECTIVES In this chapter you will learn:  The relational database model.  To write basic database queries in SQL.  To add data sources to projects.  To use the IDE's drag-and-drop capabilities to display database tables in applications.  To use the classes of namespaces System.Data and System.Data.SqlClient to manipulate databases.  To use ADO.NET's disconnected object model to store data from a database in local memory.  To create XML documents from data sources.

4.  2006 Pearson Education, Inc. All rights reserved. 4 20.1Introduction 20.2 Relational Databases 20.3 Relational Database Overview: Books Database 20.4 SQL 20.4.1Basic SELECT Query 20.4.2 WHERE Clause 20.4.3 ORDER BY Clause 20.4.4Merging Data from Multiple Tables: INNER JOIN 20.4.5 INSERT Statement 20.4.6 UPDATE Statement 20.4.7 DELETE Statement 20.5 ADO.NET Object Model

5.  2006 Pearson Education, Inc. All rights reserved. 5 20.6Programming with ADO.NET: Extracting Information from a Database 20.6.1Displaying a Database Table in a DataGridView 20.6.2How Data Binding Works 20.7Querying the Books Database 20.8 Programming with ADO.NET: Address Book Case Study 20.9 Using a DataSet to Read and Write XML 20.10Wrap-Up 20.11Web Resources

6.  2006 Pearson Education, Inc. All rights reserved. 6 Fig. 20.23 | Adding a data source to a project. Data Sources windowData menu

7.  2006 Pearson Education, Inc. All rights reserved. 7 Fig. 20.24 | Choosing the data source type in the Data Source Configuration Wizard.

8.  2006 Pearson Education, Inc. All rights reserved. 8 Fig. 20.25 | Adding a new data connection.

9.  2006 Pearson Education, Inc. All rights reserved. 9 Fig. 20.26 | Choosing the Books.mdf data connection.

10.  2006 Pearson Education, Inc. All rights reserved. 10 Fig. 20.27 | Saving the connection string to the application configuration file.

11.  2006 Pearson Education, Inc. All rights reserved. 11 Fig. 20.28 | Choosing the database objects to include in the DataSet.

12.  2006 Pearson Education, Inc. All rights reserved. 12 Fig. 20.29 | Viewing a data source listed in the Data Sources window. Data Sources window

13.  2006 Pearson Education, Inc. All rights reserved. 13 Fig. 20.30 | Viewing a database listed in the Solution Explorer.

14.  2006 Pearson Education, Inc. All rights reserved. 14 Fig. 20.31 | Design view after dragging the Authors data source node to the Form. authorsBindingNavigator authorsDataGridView Component tray

15.  2006 Pearson Education, Inc. All rights reserved. 15 Fig. 20.32 | Displaying the Authors table in a DataGridView. Move to first row Move to next row Move to previous row Move to last row (a) Delete the current row Add a new row Save changes (b) Currently selected row

16.  2006 Pearson Education, Inc. All rights reserved. 16 Fig. 20.33 | Data binding architecture used to display the Authors table of the Books database in a GUI.

17.  2006 Pearson Education, Inc. All rights reserved. 17 Outline DisplayTable.cs (1 of 2)

18.  2006 Pearson Education, Inc. All rights reserved. 18 Outline DisplayTable.cs (2 of 2) (a) (b)

19.  2006 Pearson Education, Inc. All rights reserved. 19 Fig. 20.35 | Viewing the BooksDataSet in the Dataset Designer. Dataset Designer TitlesTableAdapter

20.  2006 Pearson Education, Inc. All rights reserved. 20 Fig. 20.36 | TableAdapter Query Configuration Wizard to add a query to a TableAdapter.

21.  2006 Pearson Education, Inc. All rights reserved. 21 Fig. 20.37 | Choosing the type of query to be generated for the TableAdapter.

22.  2006 Pearson Education, Inc. All rights reserved. 22 Fig. 20.38 | Specifying a SELECT statement for the query.

23.  2006 Pearson Education, Inc. All rights reserved. 23 Fig. 20.39 | Query Builder after adding a WHERE clause by entering a value in the Filter column. (Part 1 of 2.) (a)

24.  2006 Pearson Education, Inc. All rights reserved. 24 Fig. 20.39 | Query Builder after adding a WHERE clause by entering a value in the Filter column. (Part 2 of 2.) (b)

25.  2006 Pearson Education, Inc. All rights reserved. 25 Fig. 20.40 | The SELECT statement created by the Query Builder.

26.  2006 Pearson Education, Inc. All rights reserved. 26 Fig. 20.41 | Specifying names for the methods to be added to the TitlesTableAdapter.

27.  2006 Pearson Education, Inc. All rights reserved. 27 Fig. 20.42 | Dataset Designer after adding Fill and Get methods to the TitlesTableAdapter.

28.  2006 Pearson Education, Inc. All rights reserved. 28 Outline DisplayQuery Result.cs (1 of 5)

29.  2006 Pearson Education, Inc. All rights reserved. 29 Outline DisplayQuery Result.cs (2 of 5)

30.  2006 Pearson Education, Inc. All rights reserved. 30 Outline DisplayQuery Result.cs (3 of 5)

31.  2006 Pearson Education, Inc. All rights reserved. 31 Outline DisplayQuery Result.cs (4 of 5) (b) (a)

32.  2006 Pearson Education, Inc. All rights reserved. 32 Outline DisplayQuery Result.cs (5 of 5) (c)

33.  2006 Pearson Education, Inc. All rights reserved. 33 Outline AddressBook.cs (1 of 3)

34.  2006 Pearson Education, Inc. All rights reserved. 34 Outline AddressBook.cs (2 of 3)

35.  2006 Pearson Education, Inc. All rights reserved. 35 Outline AddressBook.cs (3 of 3) (b)(a) (c)

36.  2006 Pearson Education, Inc. All rights reserved. 36 Fig. 20.45 | Selecting the control(s) to be created when dragging and dropping a data source member onto the Form.

37.  2006 Pearson Education, Inc. All rights reserved. 37 Fig. 20.46 | Displaying a table on a Form using a series of Label s and TextBox es.

38.  2006 Pearson Education, Inc. All rights reserved. 38 Fig. 20.47 | Dataset Designer for the AddressBookDataSet after adding a query to AddressesTableAdapter.

39.  2006 Pearson Education, Inc. All rights reserved. 39 Fig. 20.48 | Design view after adding controls to locate a last name in the address book.

40.  2006 Pearson Education, Inc. All rights reserved. 40 Fig. 20.49 | Viewing the DataBindings.Text property of a TextBox in the Properties window.

41.  2006 Pearson Education, Inc. All rights reserved. 41 Outline XMLWriter.cs (1 of 3)

42.  2006 Pearson Education, Inc. All rights reserved. 42 Outline XMLWriter.cs (2 of 3)

43.  2006 Pearson Education, Inc. All rights reserved. 43 Outline XMLWriter.cs (3 of 3)

44.  2006 Pearson Education, Inc. All rights reserved. 44 Outline Players.xml