Ripplebase implements primitive journaling mechanisms to speed queries on slow systems, and is targetted at legacy systems. 它實現了基本的日記機制來提高查詢速度，它適用於遺留系統。
Legacy system reengineering has already been a very important branch of software engineering. 遺留系統再工程已經成為軟體工程領域一個重要分支。
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