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J2ME application saves and retrieves data using the Record Management System (RMS), which is discussed in the previous chapter Applications running on both Connected Limited Device Configuration (CLDC) and Connected Device Configuration (CDC) devices use RMS for local data management J2ME applications that run on CDC devices are also capable of utilizing a relational database management system (DBMS), which provides industrial-strength database management service to the application The DBMS is typically located on a server connected to the device over a network, although some CDC devices might have the DBMS stored locally on a hard drive As you ll recall from 1, CLDC devices usually have between 160KB and 512KB of available memory and are battery powered They also use an inconsistent, small- bandwidth network wireless connection and may not have a user interface CLDC devices use the KJava Virtual Machine (KVM) implementation, which is a stripped-down version of the JVM CLDC devices include pagers, personal digital assistants, cell phones, dedicated terminals, and handheld consumer devices with between 128KB and 512KB of memory CDC devices use a 32-bit architecture, have at least 2MB of memory available, and implement a complete functional JVM CDC devices include digital set-top boxes, home appliances, navigation systems, point-of-sale terminals, and smart phones A database is a collection of data managed by a DBMS Many corporations use one of several commercially available DBMSs, such as Oracle, DB2, Sybase, and Microsoft Access (used for small data collections) A CDC-based J2ME application interacts with commercial DBMSs by using a combination of Java data objects that are defined in the Java Database Connection (JDBC) specification and by using the Structured Query Language (SQL) The JDBC interface forms a communications link with a DBMS, while SQL is the language used to construct the message (called a query) that is sent to the DBMS to request, update, delete, and otherwise manipulate data in the DBMS This is the first of three chapters that show how to incorporate database interactions into a J2ME application In this chapter you learn how to transform data elements of a business system into a relational database, which is a common task in development of J2ME applications You can skip this chapter if you are familiar with this technique The next chapter focuses on Java data objects what they are, how they work, and how to use them to communicate with a DBMS 11 shows how to write and execute queries, and then interact with the results returned by the DBMS. vb.net ean 13 reader .NET EAN - 13 Barcode Reader for C#, VB . NET , ASP.NET Applications
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16 Sep 2008 ... Demonstrates creating EAN - 13 Barcodes with VB . NET . ... programs for hand held devices which came with an integrated barcode reader . public int i; private double j; private int myMethod(int a, char b) { // E-commerce sites work to maintain the privacy of their customers They must also try to ensure that business conducted over the Internet is secure To understand the effects of public and private access, consider the following program: . 7: privacy cookie privacy policy security data encryption Secure Socket Layer (SSL) digital certificate birt upc-a, data matrix code word placement, birt barcode open source, birt ean 128, ean 128 word font, word 2010 ean 13 vb.net ean 13 reader Read Barcodes from Images C#/ VB . NET - BC.NetBarcodeReader ...
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NET EAN - 13 Barcode Reader , Reading EAN - 13 barcode images in .NET, C#, VB . NET , ASP.NET applications. /* This program demonstrates the difference between public and private */ class Test { int a; // default access public int b; // public access private int c; // private access // methods to access c void setc(int i) { // set c's value c = i; } int getc() { // get c's value return c; } } class AccessTest { public static void main(String args[]) { Test ob = new Test(); // These are OK, a and b may be accessed directly oba = 10; obb = 20; // This is not OK and will cause an error obc = 100; // Error! // You must access c through its methods obsetc(100); // OK Systemoutprintln("a, b, and c: " + oba + " " + obb + " " + obgetc()); } } vb.net ean 13 reader EAN - 13 VB . NET DLL - KeepAutomation.com
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NET. Free demo download. How to read, scan EAN - 13 linear barcode image in . NET applications ... High-quality barcode reader ; C#, VB . NET sample code ... A personal digital assistant (PDA) is probably the most commonly used small mobile computing device next to a cellular telephone PDAs are lightweight and small enough to fit in a pocket, and they run essential applications PDA is a generic name that applies to a simple digital telephone directory and to more elaborate mobile computing devices that run a spreadsheet, word processor, email, and a variety of customized programs All PDAs are small computing devices that contain an operating system, processor, memory, and a port to connect the PDA to peripherals and external computing devices There are three commonly used operating systems on a PDA: EPOC, Palm OS, and Windows CE EPOC is used in the Psion product line, Palm OS in the Palm PDAs, and Windows CE on various pocket PC devices There is an assortment of processors designed for the PDA market that include the DragonBall processor built by Motorola and used in the Palm PDA The DragonBall has a 16 MHz clock speed The StrongARM processor, manufactured by Intel, is another PDA processor used in the Psion product line and some pocket PCs The StrongARM has a clock speed of 200 MHz Another competitor in the PDA processor market is the Crusoe processor manufactured by Transmeta, which is also found in some pocket PC PDAs Avoid equating a PDA s processing speed with that of a desktop or laptop computer Some operating systems, such as Windows CE, require more processing than a Palm OS PDA to perform a similar task, and the extra processing power running under Windows CE does not necessarily perform a task any faster than a Palm Memory is precious in a PDA A PDA does not have permanent storage, therefore all the applications and data running in a PDA must reside in memory PDAs use ROM and RAM ROM is used to store bundled applications from the factory These include a word processor, spreadsheet, diary, telephone directory, and other kinds of programs. Identify ways to protect privacy and ensure security Use a table similar to the one below (also available online) As you can see, inside the Test class, a uses default access, which for this example is the same as specifying public b is explicitly specified as public Member c is given private access This means that it cannot be accessed by code outside of its class So, inside the AccessTest class, c cannot be used directly It must be accessed through its public methods: setc( ) and getc( ) If you were to remove the comment symbol from the beginning of the following line, // obc = 100; // Error! 2: E-commerce sites depend on information they gather from their customers To protect this data and maintain customer trust, e-commerce sites spend a lot of time and resources on privacy and security vb.net ean 13 reader VB . NET Image: VB Code to Read and Recognize EAN - 13 Barcode from ...
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