Java is the primary language for the eclipse platform Java是eclipse平台的主语言。
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A mechanism for associating a relational database with its host language . it is used to indicate a record in database to help user fetch them one by one 一种用以把关系数据库与其主语言相连接的机制,用它来指数据库中的某个记录以帮助用户逐个取出它们。