beginning java se 6 from novice to professional

... which Java EE builds It is the core on which Java EE is based As you’ll see, Java EE consists of several layers, and J2SE is right at the base of that pyramid for each compo-nent of Java EE As a Java ... is often called the presentation layer, since its job is to present stuff to the user and provide a means for the user to present stuff to the software system The presentation layer includes ... of use to GUI applications, application servers provide services of use to enterprise applications—things like communication facilities to talk to other computers, management of database connections,

Ngày tải lên: 12/08/2014, 22:22

... browser that sends a request to a web server, which, in turn, sends back a web page that’s stored at the server, as illustrated in Figure 1-8 In that role, the web server is simply being used ... developed to enhance servers A Servlet is a Java component implementing the javax.servlet.Servlet interface It is invoked as a result of a client request for that particular Servlet The Servlet ... converted into an HTML web page and sent back to the client Thus, web servers that were designed to serve static content can be enhanced to provide dynamic content. The Servlet itself is managed

Ngày tải lên: 12/08/2014, 22:22

... established the Web Service Description Language (WSDL) as the XML format that is used by web services to describe their services and how clients access those services In order to call those services, ... that allows you to build fine-grained security into the Java code ■ Note If you’re interested in learning more about Java EE-specific security, refer to a book devoted to Java security One such ... to run into as you examine and develop Java EE-based systems Each one of these has its own merits and strong points We present them here to illustrate that there are a number of ways to put together

Ngày tải lên: 12/08/2014, 22:22

... hard-code the index as rdr[0] To use the connection for another purpose or to run another query on the database, it’s important to call the Closemethod of SqlDataReaderto close the reader explicitly ... doesn’t need to use the connection for another purpose) // close data reader rdr.Close(); Using Ordinal Indexers You use an ordinal indexer to retrieve column data from the result set Let’s learn ... result sets You’ll now learn how to getinformation about schemas Trang 26Getting Data About TablesThe term schema has several meanings in regard to relational databases Here, we use it to refer to

Ngày tải lên: 08/08/2014, 18:21

... customer WOLZA from Warszawato Gdansk Now click the Save Data button The new row is now inserted into the Customerstable in the database, and the city for WOLZA has been updated too.Close the window ... isn’t the Customersdatabase table It’s the northwndDataSetdataset The third line simply does the same kind of thing you did in Chapter 8 to propagatechanges to a dataset to the database It calls ... though you can use mixed case for table and column names, and SQL Server accepts this as the spelling for these database objects, SQL references to database objects aren’t case sensitive For example,

Ngày tải lên: 09/08/2014, 14:20

... location, or else set it to NULL The optional options parameter is an array used to set the following options: actor: Identifies the SOAP server as an actor, defining its URI encoding: Sets the character ... use of these classes with the disable_classes directive For example, suppose you want to completely disable the use of two classes, named administrator and janitor: para-disable_classes = "administrator, ... prepended to the authentication realm Further-more, the PHP_AUTH variables are not set when safe mode is enabled • If using the MySQL database server, the username used to connect to a MySQL server

Ngày tải lên: 09/08/2014, 14:21

... function is to reload the map in the user’s browser You want to give the form processor time to process the submitted data, so you use the JavaScript setTimeoutfunction to create a 1-second (1000 ... from the user’s web browser, it is important to create alternatives for all Ajax-based code, in the case that the user decides to not allow JavaScript This is where both careful layout and server-side ... Trang 16it back the browser Now, with basic web-based navigation, the browser has a lot of built-in features to handle said latency—features that users are quite used to Unfortunately, those features

Ngày tải lên: 05/08/2014, 10:20

... 266 Datasets vs Data Readers 266 A Brief Introduction to Datasets 266 A Brief Introduction to Data Adapters 268 A Brief Introduction to Data Tables, Data Columns, and Data Rows 269 ... From Novice to Professional Trang 3Vidya Vrat Agarwal and James HuddlestonRanga Raghuram, Syed Fahad Gilani, Jacob Hammer Pedersen, and Jon Reid Beginning C# 2008 Databases From Novice to Professional ... Why Use a Database? 28 Benefits of Using a Relational Database Management System 29 Comparing Desktop and Server RDBMS Systems 29 Desktop Databases 30 Server Databases 30 The Database

Ngày tải lên: 08/08/2014, 18:21

... you would like tocode) Desktop databases generally offer an easy-to-use graphical user interface Server Databases Server databases are specifically designed to serve multiple users at a time ... template for new databases to be created; in other words, settings of the model database will be applied to all user-createddatabases • The msdb database is used by SQL Server Agent for scheduling ... differentiate server databases fromtheir desktop counterparts: • Flexibility: Server databases are designed to be very flexible to support multiple platforms, respond to requests coming from multiple

Ngày tải lên: 08/08/2014, 18:21

... asc,orderdate asc Using SELECT INTO Statements ASELECT INTOstatement is used to create a new table containing or not containing the result set returned by a SELECTquery SELECT INTOcopies the exact ... Stored Procedure with an Output Parameter Output parameters are usually used to pass values between stored procedures, butsometimes they need to be accessed from C#, so here you’ll see how to ... procedure 2. If the stored procedure is not available in the master database, SQL Serversearches inside either the database from which you are calling it or the databasewhose name you provide

Ngày tải lên: 08/08/2014, 18:21

... a customer insert into customers (customerid, companyname) values(@newcustid, @newconame) Save error number returned from Insert statement set @inserr = @@error if @inserr > @maxerr set @maxerr ... int set @maxerr = 0 begin transaction Add a customerinsert into customers (customerid, companyname)values(@newcustid, @newcompname) Save error number returned from Insert statementset @inserr ... in the SELECTclause aremapped to attributes or subelements Try It Out: Using FOR XML AUTO To see how to use FOR XML AUTOto format query results as nested XML elements, followthese steps: 1. Replace

Ngày tải lên: 08/08/2014, 18:21

... defaults to SQL Server security,which uses a separate login and password within SQL Server Trang 19How to Use SQL Server SecurityIf you really did intend to use SQL Server security because that’s ... Close()to terminate the sessionand then print a message to show that Close()was called finally {// close connectionconn.Close(); Console.WriteLine("Connection closed."); } You call Close()within ... aren’t valid on theserver This is unlikely to be the problem when connecting to a local SSE instance,but it might happen in trying to connect to a SQL Server instance on another server • A hardware

Ngày tải lên: 08/08/2014, 18:21

... database You’ll see in the “Propagating Changes to a Data Source” section how to persist the original data source changes made to a dataset ■ Note Changes you make to a dataset aren’t automatically ... propagated to a database To save the changes in a database, you need to connect to the database again and explicitly perform the necessary updates Try It Out: Modifying a Data Table in a Dataset Let’s ... SSMSE, you’ll see the update has been propagated to the database The city for employee Steven Buchanan is now Wilmington, not London InsertCommand Property propagated to the database Try It Out:

Ngày tải lên: 08/08/2014, 18:21

... 2. HTTP sends a GET request to the web server, and the web server processes that C H A P T E R 1 5 Trang 163. The web server initiates a response; HTTP sends the response to the web browser.4. ... will POST the data back to the web server, and the web server processes thatdata 7. HTTP sends the response to the web browser 8. The web browser processes the response and displays the result ... web server responds to the web browser or web client’s request with the data the user wants to see or workwith HTTP is a communication protocol that is used to request web pages from the webserver

Ngày tải lên: 08/08/2014, 18:21

... Database Exception-2button You’ll see the message box in Figure 16-9 Click OK to close the messagebox, click OK to close the next one, and then close the window.Figure 16-9.Stored procedure database ... can also be set without using the Smart Tag feature You candirectly set the MultiLine property to True, which is set to False by default 6. Drag a Label control from the Toolbox to below the ... data 4. To see the image you have inserted into the database, open SQL Server ment Studio Express and run a SELECTquery on the image table you have created Manage-in the tempdb database (see Figure

Ngày tải lên: 08/08/2014, 18:21

... expression: from c in customers select c ; A query expression is composed of a fromclause and a query body You use the sim-plest form of the fromclause and query body here This fromclause declares ... to SQL Query In this exercise, you’ll use LINQ to SQL to retrieve all customers from the Northwind Cus-tomers table 1. Navigate to Solution Explorer, right-click the Chapter19 solution, and select ... manages the connection to a data source, but also translates LINQ requests (expressed in SQO) into SQL, passes the SQL to the database server, and creates objects from the result set You create a typed

Ngày tải lên: 08/08/2014, 18:21

... Hammer Pedersen, and Jon Reid Beginning C# 2005 Databases From Novice to Professional Trang 3Beginning C# 2005 Databases: From Novice to ProfessionalCopyright © 2006 by James Huddleston, Ranga ... Types 61 Date and Time Data Types 62 Binary Data Types 62 Other Data Types 62 Data Type Precedence 63 Summary 64 ■ CHAPTER 4 Introducing ADO.NET 65 Why ADO.NET? 65 From ADO to ADO.NET ... 456 Summary 457 ■ CHAPTER 18 Introducing LINQ 459 What Is LINQ? 460 Installing LINQ 461 Using LINQ to SQL 466 Try It Out: Coding a Simple LINQ to SQL Query 467 How It Works 469

Ngày tải lên: 09/08/2014, 14:20