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PROGRAMMABLE LOGIC CONTROLLER, DATA COLLECTION APPARATUS, DATABASE ACCESS METHOD, AND DATABASE ACCESS PROGRAM
PROGRAMMABLE LOGIC CONTROLLER, DATA COLLECTION APPARATUS, DATABASE ACCESS METHOD, AND DATABASE ACCESS PROGRAM
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机译:可编程逻辑控制器,数据收集装置,数据库访问方法和数据库访问程序
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摘要
A plurality of records are collectively manipulated with a simple structure, in a technology for manipulating a database without having to formulate SQL statements. A database access unit of a programmable logic controller generates an SQL statement for manipulating a plurality of records, with reference to a plurality of structure data included in a data group generated by an execution unit and definition data representing a definition of the structure data, and executes the SQL statement.
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