The paper analyzes the logic data structure of the 1c card and security performance supported by 1c cards 本文對ic卡中數(shù)據(jù)的邏輯結構,以及ic卡提供的較高的安全性能進行了分析。
Then , the work principle of the radio frequency technology . the paper analyzes the logic data structure of the ic card and security performance supported by ic cards 首先論文描述了ic卡的發(fā)展和現(xiàn)狀,然后通過對射頻識別技術原理的研究,揭示了射頻ic卡的工作原理。
After analyzing the product data exchange and share among cax , pdm and erp , this paper expounded three arrangements of ideas to carry out system integration between pdm and erp at present , then , broadly combining with the last research achievements of information integration theory and method and synthetically considering technical advancement and practical needs of domestic medium and small - scale enterprises . advanced and analyzed three plans to solve the integration problems . in view of reasonable method to organize product information , the paper adopted express model language to describe integrated logic data structure , built integrated data model with o - o feature to support system integration , discussed the method to bring about integrated data model on rdbms , and at last , according to the implementation of cims in yunnei power co . , ltd , developed a integrated data model to exchange and share information between pdm and erp by means of transforming ebom to mbom 本文首先對cax 、 pdm 、 erp之間的產(chǎn)品數(shù)據(jù)交換與共享作了分析,闡述了現(xiàn)階段pdm與cax應用系統(tǒng)之間實現(xiàn)集成的三個層次:結合國內(nèi)外信息集成理論及方法的最新研究成果,綜合考慮技術上的先進性和國內(nèi)中小企業(yè)的實際需要,提出并分析了三種解決集成問題的方案;基于產(chǎn)品信息的合理組織方法,采用express模式語言描述集成邏輯數(shù)據(jù)結構,建立了具有o - o特征的集成數(shù)據(jù)模型以支持系統(tǒng)集成,并討論了集成數(shù)據(jù)模型在rdbms上的實現(xiàn)方法;最后開發(fā)了一個以云內(nèi)動力股份有限公司cims工程為應用背景的集成數(shù)據(jù)模型,通過利用ebom向mbom轉換的技術來實現(xiàn)pdm系統(tǒng)與erp系統(tǒng)之間的信息交換和共享。