摘要
随着嵌入式数据库系统的不断发展,对其数据查询的能力提出了新的要求。基于自行设计的嵌入式数据库系统,利用Lex和Yacc工具实现了嵌入式SQL编译器的设计,进一步对所生成的语法树进行了初步的优化研究。结果表明此编译器大大增强支持SQL查询语言的能力。
Subsequent with the development of embedded database system, improvements in data query are urgently required. Based on the embedded database system have designed, the SQL complier is successfully implemented using tools of Lex arid Yace. Furthermore, preliminary optimization researches have been proposed on the generated syntax analysis tree. The result indicates that the compiler remarkably reinforces the SQL query capacities.
出处
《计算机技术与发展》
2007年第11期121-124,共4页
Computer Technology and Development
