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在普及SQL中带有扩展名^^^的文件的用途

[英]Purpose of file with extension ^^^ in Pervasive SQL

原文 2015-02-08 20:32:49 5 1 sql/ database/ file-extension/ pervasive

I'm researching a file extension "^^^". 我正在研究文件扩展名“ ^^^”。

Found the following info about this extension on FileInfo.com: 在FileInfo.com上找到有关此扩展名的以下信息：

"Database file used by Pervasive.SQL database software; based on the Btrieve transactional database format; created by the database engine when the database is placed in Continuous Operations mode." “ Pervasive.SQL数据库软件使用的数据库文件；基于Btrieve事务数据库格式；当数据库处于“连续操作”模式时，由数据库引擎创建。”

But it's not entirely clear what's the purpose of this file type. 但是，这种文件类型的目的还不是很清楚。 What exactly it contains? 它到底包含什么？ Is it a temporary copy of a database or something else that doesn't contain any actual data? 它是数据库的临时副本还是不包含任何实际数据的其他内容？

1 个解决方案

Those files are not temporary copies of the database or data files but they store the changed data during the time Continuous Operation is enabled. 这些文件不是数据库或数据文件的临时副本，但它们在启用“连续操作”期间存储更改的数据。 It allows the changes made during that time to be rolled into the main data file after Continuous Operations is stopped. 它允许在“连续操作”停止后将这段时间内所做的更改滚动到主数据文件中。 Continuous Operations mode allows the main file to be copied or backed up in cases when the files are open (either because they can't be closed or just haven't been closed). 连续操作模式允许在打开文件的情况下复制或备份主文件（因为无法关闭或刚刚关闭文件）。