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    • 3. 发明申请
    • CONTROL DEVICE
    • 控制装置
    • US20150254305A1
    • 2015-09-10
    • US14405980
    • 2013-06-21
    • OMRON CORPORATION
    • Kotaro OkamuraYoshihide NishiyamaMinoru OkaMasanori OtaMasaru Nakasaki
    • G06F17/30
    • G06F17/30507G05B19/056G05B19/4186G05B2219/31369G06F17/30595Y02P90/12Y02P90/185
    • Provided is a technique enables programming, including that for database operations, without describing a SQL used to operate the database. A PLC (30) that can access a DBMS (22) stores a user program (38) and definition information (32), the user program (38) including a structure type of variable, the definition information (32) indicating a definition of the structure type. The sequence command program (34) sequentially executes instructions in the user program (38) and invokes a DB access process program (35) in order to access the DBMS (22). The DB access process program (35) reads the definition information (32) and, on the basis of the read definition information (32), generates a SQL statement to be used when access to the DBMS (22) is made by execution of the user program (38). The DB access process program (35) executes the generated SQL statement by transmitting the SQL statement to the DB server (20).
    • 提供了一种能够进行编程的技术,包括数据库操作的编程,而不用描述用于操作数据库的SQL。 可访问DBMS(22)的PLC(30)存储用户程序(38)和定义信息(32),所述用户程序(38)包括变量的结构类型,所述定义信息(32)指示 结构类型。 序列命令程序(34)顺序执行用户程序(38)中的指令,并且调用DB访问处理程序(35)以访问DBMS(22)。 数据库访问处理程序(35)读取定义信息(32),并且基于读取的定义信息(32)生成当通过执行DBMS(22)进行访问DBMS(22)时要使用的SQL语句 用户程序(38)。 DB访问过程程序(35)通过将SQL语句发送到DB服务器(20)来执行生成的SQL语句。