實(shí)時(shí)數(shù)據(jù)庫的核心問題是事務(wù)的處理既要確保數(shù)據(jù)的一致性,又要保證事務(wù)的正確性,
而它們都與定時(shí)相關(guān)聯(lián)。本文對(duì)混合實(shí)時(shí)事務(wù)的真實(shí)時(shí)和非實(shí)時(shí)部分加以區(qū)別定義,建立了混合實(shí)時(shí)數(shù)據(jù)庫模型,并分析了混合實(shí)時(shí)事務(wù)的調(diào)度與并發(fā)控制,可以更好地滿足實(shí)時(shí)性時(shí)間約束需求,從而提高系統(tǒng)效率。
關(guān)鍵字:混合實(shí)時(shí)事務(wù),實(shí)時(shí)數(shù)據(jù)庫,并發(fā)控制
Abstract: The core problem of the real-time database system is to ensure the consistency of data and the correctness of events, which are related to time. In this paper, a transaction including genuine real-time and non-real-time is proposed, and hybrid real-time database system model is given. It discusses and analyzes the real-time transaction scheduling and concurrence control, which can meet the real-time requirement better, and improve the efficiency of system.
Keywords: Hybrid Real-time Transaction, Real-time Database System, Concurrency Control