This language implements the syntax definition , such as report data source sql operations between data and report conditions etc . the report data files can be gotten after the data parser parses the report data definition file with dom 本文重點描述了基于xml的自定義報表數據語言xrdl ,該語言實現了報表數據源sql 、數據間的運算、報表條件、合計等語法定義。
Based on the fourth version of x . 509 standard and rfc3281 document , the basic idea of pki and pmi as well as x . 509 attribute certificate are explained . in the second part , attribute certificate authorization mechanism of pmi is investigated using an example , including the modification of pmi role model , the asn . 1 syntax definition of role specification certificate and role assignment certificate , the flow design and analysis of attribute certificate authorization mechanism and the validation verification of certificate chain 其中包括了對pmi角色模型的改進、角色規范證書和角色分配證書的asn . 1語法結構定義、證書的授權流程設計與分析以及屬性證書鏈的有效性驗證等;最后,本文根據證書機制授權流程設計了一個簡單的pmi特權處理模型,并對其中的模型組件、系統運作過程和設計中考慮到的若干技術細節分別予以了有益的探討。