Research On Par Method Self-learning System Based On Web Service And Multimedia Database Technology

With the large data,the arrival of the cloud computing era and the rapid development of the software development industry,how to easily develop the software and how to efficiently carry out the algorithm programming has been the research hotspot of the computer industry.From the early face-to-face teaching development to today's online teaching(MOOC,Alice,GreenFoot,etc.)algorithm programming teaching work has been more and more people's attention.However,the existing programming methods textbooks and online programming teaching systems have failed to clarify the principles of programming,that is,the process of the process,especially the origin of some sophisticated programs.The method of this paper is based on the convenient method of programming method(PAR method)and algorithm program and software automatic generation platform(PAR platform).The PAR method is a practical formal development method proposed by Professor Xue Jinyun.The PAR method is implemented by abstract procedure Design language program Apla program to the executable program of automatic conversion,to achieve the automation of software development.The PAR method gives the design process of the algorithm and program,and can clearly describe the origin of the algorithm and program.At the same time,PAR as a method and platform to support the formal development and derivation of software,which provides an efficient,reliable and convenient way for algorithm programming.The main work of this project is to use the Web service and multimedia database technology to develop the basic concept of algorithmic programming using the PAR method.The algorithm design language Radl is the main idea of two national natural fund projects and two national natural fund projects.,The abstract programming language Apla,and the methodological image of the design and derivation algorithm program vividly presented to the learner.The innovation of this paper lies in:1.Using the Web Service technology to deploy the algorithm program and the software automatic generation platform into the service,and call the deployed services,so that in the PAR method self-learning system to achieve the algorithm and software automatically generate platform error,conversion and operation functions,During the self-learning process,the Apla program instance in the system can be converted into executable programs(Java,C ++,C # and VB),and the converted executable program can be run and the corresponding result can be obtained.2.Using the LOB data type and inter Media mechanism of Oracle multimedia database,the multimedia database technology is used to realize the management and operation of the multimedia data in the PAR method,and the usability and application value of the multimedia data are improved,which makes the teaching system vivid and intuitive,Easy to understand,effectively improve the students learn to master the programming courses of interest and enthusiasm.3.In this paper,the convenience method based on PAR method and the design and description of the new algorithm are presented to the learners in a self-taught way.The method of designing the self-learning system of the PAR method is based on the PAR method and the algorithm and the software automatically generate the platform,Can clearly describe the algorithm,the program design process.