primary file key

基本解释

The retrieval of a data record in an indexed file by the primary (or optionally, alternate) key within the data record .
在索引文件中，通過數據記錄中的主要關鍵字或可選關鍵字進行數據記錄的檢索的一種方法。
Note that if the physical file is keyed (perhaps because it has a Primary Key constraint), its index will also be moved on or off of SSD with these commands.
注意，如果物理文件使用了鍵控（可能因爲它有一個 Primary Key 約束），其隱式索引也將通過這些命令被移動到 SSD 或從中移出。
This paper introduces the design & implementation of a parallel file system based on direct data access, and gives out the primary functions and key technologies of parallel file system.
該文介紹了一種基於直接數據訪問的竝行文件系統的設計和實現，闡明了該竝行文件系統具備的主要功能及解決的關鍵技術問題。