正在加载图片...
Database Access from Application Program Non-procedural query languages such as SQL are not as powerful as a universal Turing machine. SQL does not support actions such as input from users,output to displays,or communication over the network. ■ Such computations and actions must be written in a host language,such as C/C++,Java or Python,with embedded SQL queries that access the data in the database. Application programs--are programs that are used to interact with the database in this fashion. Database System Concepts-7th Edition 1.20 ©Silberscha乜,Korth and SudarshanDatabase System Concepts - 7 1.20 ©Silberschatz, Korth and Sudarshan th Edition Database Access from Application Program ▪ Non-procedural query languages such as SQL are not as powerful as a universal Turing machine. ▪ SQL does not support actions such as input from users, output to displays, or communication over the network. ▪ Such computations and actions must be written in a host language, such as C/C++, Java or Python, with embedded SQL queries that access the data in the database. ▪ Application programs -- are programs that are used to interact with the database in this fashion
<<向上翻页向下翻页>>
©2008-现在 cucdc.com 高等教育资讯网 版权所有