Research On The Component Of Android Terminal Accessing The Remote Database

Along with the rapid development of terminal for Internet of Things, users pay more and more attention to operating systems of terminal products and the operating system has become one of the core competitions among terminal products. The Android operating system has caught considerable attentions as the mainstream of terminal operating system. The rapid development of industrial handheld terminals requires the remote database and Android embedded terminal to keep better and faster data interaction and transfer. Therefore, it claims higher requirements for the developing tools of Android embedded terminal access to the remote database. Now there are a lot of tools for developing Android embedded terminal applications, such as Android Studio software and DoirdDB software. In addition, developers also need to the Android embedded terminal access remote database urgently. However, there are few developing softwares for accessing remote database currently.In order to solve the problems of code generation of Android's terminal accessing remote database, the author combines the theory of SQL grammar and custom components, the author builds automatically generated SQL statements for this process. In addition, through the components, the development of Android embedded terminal accessing remote database can be accomplished. The components consist of three custom components:component to connect to a remote database, component to query the remote database and component to update the remote database components of the three custom components. Each custom component contains a number of custom attributes and provides the corresponding interface used to receive corresponding property parameters transferred by users. The author builds SQL grammar by referring to the Content-Free Grammar. Furthermore, the component can further realize the functions of connecting remote database, updating remote database, deleting remote database and querying remote database via combination of simulating direct derivation process of production and parameters tansferred by customers.Through research and analyzing the composition of SQL statements and the method of Android embedded terminal accessing to remote interface, the author develops the components for developing Android embedded terminal applications by applying the technologies including code auto-generation and Android custom components. Developers can obtain needed SQL sentences for Android embedded terminals to visit remote datebase by inputting necessary parameters. Furthermore, the development of the whole Android application by the terminals can be realized.