barcode 128 generator vb.net EXERCISE 6-3 Legacy Mapping in Java

Printing QR Code in Java EXERCISE 6-3 Legacy Mapping

EXERCISE 6-3 Legacy Mapping
Decode QR Code ISO/IEC18004 In Java
Using Barcode Control SDK for Java Control to generate, create, read, scan barcode image in Java applications.
Drawing QR Code In Java
Using Barcode creator for Java Control to generate, create Quick Response Code image in Java applications.
Question What is legacy object mapping Answer Legacy object mapping builds wrappers around legacy system interfaces to access elements of the legacy business logic and database tiers directly. Legacy object
Scanning QR Code JIS X 0510 In Java
Using Barcode recognizer for Java Control to read, scan read, scan image in Java applications.
Barcode Printer In Java
Using Barcode generation for Java Control to generate, create bar code image in Java applications.
Distinguish Appropriate from Inappropriate Techniques
Bar Code Reader In Java
Using Barcode scanner for Java Control to read, scan read, scan image in Java applications.
QR Code ISO/IEC18004 Creation In C#.NET
Using Barcode drawer for .NET Control to generate, create QR Code JIS X 0510 image in Visual Studio .NET applications.
mapping tools are used to create proxy objects that access legacy system functions and make them available in an object-oriented manner.
Creating QR Code In .NET
Using Barcode maker for ASP.NET Control to generate, create Quick Response Code image in ASP.NET applications.
QR Code 2d Barcode Encoder In .NET Framework
Using Barcode maker for VS .NET Control to generate, create Quick Response Code image in .NET framework applications.
EXERCISE 6-4 Transaction Monitors
Quick Response Code Creation In Visual Basic .NET
Using Barcode creation for Visual Studio .NET Control to generate, create Quick Response Code image in .NET applications.
Draw Linear In Java
Using Barcode encoder for Java Control to generate, create Linear image in Java applications.
Question What is the purpose of a transaction monitor Answer Transaction monitors are programs, such as IBM CICS, that monitor transactions, to ensure that they are completed in a successful manner. They ensure that successful transactions are committed, that unsuccessful transactions are aborted, and that the in-flight data updates are rolled back to the status quo ante or the state it was before the attempted change.
Create EAN13 In Java
Using Barcode printer for Java Control to generate, create UPC - 13 image in Java applications.
EAN / UCC - 13 Maker In Java
Using Barcode creation for Java Control to generate, create UPC - 13 image in Java applications.
EXERCISE 6-5 Off-Board Servers
EAN / UCC - 8 Creator In Java
Using Barcode drawer for Java Control to generate, create EAN 8 image in Java applications.
1D Drawer In Visual Basic .NET
Using Barcode creator for Visual Studio .NET Control to generate, create Linear image in VS .NET applications.
Question What is an off-board server Answer An off-board server is a server that executes as a proxy for a legacy system. It communicates with the legacy system using the custom protocols supported by the legacy system. It communicates with external applications using industry-standard protocols.
Print Barcode In .NET
Using Barcode creation for .NET framework Control to generate, create bar code image in VS .NET applications.
UPCA Creator In VS .NET
Using Barcode maker for Reporting Service Control to generate, create UCC - 12 image in Reporting Service applications.
EXERCISE 6-6 JDBC vs. ODBC
USS Code 128 Maker In Visual Basic .NET
Using Barcode generation for .NET framework Control to generate, create Code128 image in VS .NET applications.
Make UPC Code In VB.NET
Using Barcode drawer for VS .NET Control to generate, create UPCA image in .NET applications.
Question How does Java Database Connectivity (JDBC) differ from the Microsoft database connectivity interface (Open Database Connectivity, or ODBC)
Bar Code Creation In .NET Framework
Using Barcode generation for ASP.NET Control to generate, create barcode image in ASP.NET applications.
Barcode Recognizer In .NET Framework
Using Barcode scanner for VS .NET Control to read, scan read, scan image in Visual Studio .NET applications.
6: Legacy Connectivity
Answer ODBC is the industry-standard interface by which database clients connect to database servers. JDBC is a pure Java solution that does not follow the ODBC standard. A bridge between JDBC and ODBC allows JDBC to access databases that support ODBC.
EXERCISE 6-7 Accessing Legacy System Software
Question How is Java Native Interface (JNI) used to access legacy system software Answer JNI is used to write custom code to interface Java objects with legacy software that does not support standard communication interfaces.
EXERCISE 6-8 Accessing COM Objects
Question How is Java-to-COM bridging used to access COM objects Answer A Java-to-COM bridge enables COM objects to be accessed as Java classes and Java classes to be accessed as COM objects, thereby providing some support for using Microsoft software with Java.
EXERCISE 6-9 RMI vs. CORBA
Question What are the primary differences between RMI and CORBA, and for what is Internet Inter-ORB Protocol (IIOP) used
Distinguish Appropriate from Inappropriate Techniques
Answer RMI and CORBA are both distributed-object technologies that support the creation, maintenance, and accessibility of objects. CORBA supports a languageindependent approach to developing and deploying distributed objects. RMI is a Javaspecific approach. IIOP is used to support communication between object request brokers such as CORBA via TCP/IP. RMI uses a stub that is a proxy for a remote object that runs on the client computer. RMI and CORBA use a skeleton as a proxy for a remote object that runs on the server. Stubs forward a client's RMIs (and their associated arguments) to skeletons, which forward them on to the appropriate server objects. Skeletons return the results of server method invocations to clients via stubs. The difference between RMI and CORBA is that the CORBA stubs access the ORB, and then the CORBA skeleton.
CERTIFICATION SUMMARY
The JCA is a specification for the Java platform that addresses the need to provide a standard architecture for integrating EIS. It complements the use of JNI and RMI to create a Java interface to a process running in its native domain.
6: Legacy Connectivity
TWO-MINUTE DRILL
Distinguish Appropriate from Inappropriate Techniques for Providing Access to a Legacy System from Java Technology Code Given an Outline Description of That Legacy System
q The EAI facilitates the integration of EISs, or legacy systems, as they are
also known. The classic means of communicating with an existing EIS has been a specialized adapter, which implements the support for communication with the EIS and provides access to EIS data and functions. Communication between an adapter and the EIS typically uses a protocol specific to the EIS.
q Another, more complex, form of an EIS adapter might do its adaptation
work across diverse component models, distributed computing platforms, and architectures. For example, an EIS may develop a distributed adapter that includes the capability to perform remote communication with the EIS using Java RMI or CORBA.
q The JCA puts EAI into mainstream use by establishing a standard. q The JCA comprises a resource adapter, connection management contracts,
Copyright © OnBarcode.com . All rights reserved.