# Backup Process: `BR`
+ For every table (except those in **`INFORMATION_SCHEMA`**, **`PERFORMANCE_SCHEMA`** and **`mysql`**)
  + Save table metadata into **`backupmeta`**, including:
    + `Table ID`
    + Table `schema` (`CREATE TABLE`)
    + `AUTO_INCREMENT ID`
    + `ADMIN CHECKSUM`
  + Obtain the key ranges of the regions associated with the table
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