Scores Query System of English Grade Test Based on Android Platform

Abstract

English grade test is a nationwide test of testing English proficiency, scores query after the test has become the most concerned issues for candidates. In order to facilitate the candidates query test scores, download exam transcripts at anytime and anywhere; by contrast with previous test scores, rationally determine their own English level. This paper designed a scores query system of English grade test based on Android platform, to lay a good foundation for the subsequent software development. This system adopts B/S development mode technology architecture, mainly from five aspects of Android introduction, B/S development mode, summary design, system process design and database design describes and designs the system. The system makes use of the characteristic of Android system, uses B/S development mode, with the Internet as the medium, the examinee can query test scores at any time, any place. The research contents of this paper have important reference values to promote the convenience of candidates query test scores and other aspects. Introduction The Android system is made up of Google company independent researches and developments, which is based on the Linux operating system, it is the most common that an open source mobile operating system, which is the first truly open and completed mobile terminal operating system. There are not any proprietary obstacles that hinder mobile innovation, with the standardized platform, users who are customizable and the services which are free of charge and other characteristics [1]. It is a mobile phone operating system which is fully open to the third party software. Public English test system is sponsored by the education ministry, test center of the education ministry designs, developments, and it is responsible for the implementation of the national English level test [2]. Which provides a public English test system to the society, and provides the candidates with a platform of testing and proving their English level, to provide a reference factor for the candidate's study, work, the progress of life [3]. Querying scores after the test has become the most concerned issues for the candidates, which is also an important way of distinguishing the certificate which is true or false for the enterprises and institutions. At present, for the candidates methods of querying scores usually use desktop or laptop computer to login system official website to query, which is subject to the restrictions of time and place, inconveniences the candidates. In order to facilitate the candidates query test scores at any time and place, this paper designs a scores query system of English grade test based on Android platform which adopts B/S development mode, this system can greatly improve the efficiency of the candidates query test scores, it has important significance for promoting the convenience of the candidates query test scores. 3rd International Conference on Machinery, Materials and Information Technology Applications (ICMMITA 2015) © 2015. The authors Published by Atlantis Press 1040 Android Introduction Android system architecture is generally divided into four layers from top to bottom, respectively, the application layer, application framework layer, system runtime layer, the Linux kernel layer [4,5], support the user free development. Android system architecture is mainly composed of the application layer (Application), the application framework layer (Application Framework), function library and runtime (Libraries, Android Runtime), the Linux kernel (Linux Kernel). Among them, the application layer includes system and users installed applications, both can use the API provided by the system; application framework layer provides the API for the application layer; libraries provide the application framework layer with C/C++ class library, Android runtime provides the application framework layer with Dalvik virtual machine and the core library collection of the system; the Linux kernel provides system with the core system services of memory management, process management, security mechanism, display driver and others. The specific architecture is shown in Fig. 1 [6,7]. Android system features: (1) Open, Android system is made up of Google company independent research and development, based on the Linux operating system, it is the most common that an open source mobile operating system, since its launch, with its open source code of system is conducive to upgrading and marketing which is in favor of all walks of life [8]. The system released by now, Android has been supported by most of the mobile phone maker, and makes in constant the update of system version and the improvement of the system itself; (2) Mobility, Mobile phone users of Android system can anytime and anywhere through the device's mobile data or wireless network connection mode to realize the connection of the network; (3) Get rid of the limits of mobile phone operators: With the emergence of the Android system, greatly reduces the extent of mobile operators limit mobile phone users to connect the network; mobile phone users have achieved to connect to the Internet at anytime and anywhere, network connection is faster. Based on Android above three characteristics, this paper designs a scores query system of English grade test based on Android platform B/S development mode. B/S Development Mode With the rapid development of network technology, B/S mode has already become the mainstream of system development mode, B/S mode is a type of three layers C/S structure, which is based on C/S mode, through the Server provides the Web Server, the users only need through a Web browser website to log in to the system website, visit the corresponding system webpage can complete the specific operations [9]. The database server of the system includes the system server and data server. An important part of the system server is calculation and judgment, the main task of the data server Mail client Address book Calendar Browser ··· Application layer Application framework layer Activity Manager Views System Content Provider Resource Manager Location Manager Function library Surface Manager Media Framework Open GL| ES Android runtime Core library Dalvik virtual machine Linux kernel Security Mechanism Memory Management Display Driver Process Management ··· Fig. 1. Android system architecture