simple expression syntax 中文意思是什麼
simple expression syntax
解釋
簡單表達式語法- simple : adj （ pler; plest）1 單純的；簡單的，簡易的；輕便的。2 質仆的，自然的，天真的；樸素的；率直的，...
- expression : n 1 表現，表示，表達。2 詞句；語句，措辭，說法。3 表情，臉色，態度；腔調，聲調。4 【數學】式，符...
- syntax : n. 【語法】1. 句法；句子結構學。2. 措辭法，字句排列法。
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We first present a number of desiderata for an xml - based query language, and based on this criterion, we introduce the syntax of a simple core ian - guage for semistructured data and then describe four extensions that have resulted in working prototypes. second, we present the algorithm for computing the result of a regular expression on data graph with cycles, the first - order interpretation of querying language for semistructured data, and explore structural recursion and bisimulation in semistructured data and propose an efficient and systematic way to computing a bisimulation between the two graphs. we also proposed and implemented a web querying system with database features
基於這些準則，對一個簡單的半結構數據查詢核心語言的語法提出了兩方面擴充；給出了計算數據圖中正規表達式的演算法；對半結構數據查詢語言的一階邏輯描述、結構遞歸和數據圖的雙態模擬（ bisimulation ）等問題進行了研究，提出了一種判定數據圖的bisimulation演算法；在xml數據查詢語言研究的基礎上，設計並實現了一種具有數據庫查詢特性的web查詢系統原型。
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