Max Versions

Last Updated: Aug 30, 2017

Max Versions is a data table attribute used to indicate the maximum number of data versions in each Attribute column of a data table. When the number of data versions in an Attribute column exceeds the value of Max Versions, the earliest versions will be deleted asynchronously.

After creating a data table, you can use the UpdateTable operation to dynamically change the value of Max Versions.

Data that exceeds the value of Max Versions will be cleared asynchronously. When dynamically modifying the value of Max Versions, the following restrictions may apply:

  • Data that exceeds the value of Max Versions is invalid and cannot be viewed or accessed, even though it is not deleted.

  • If you reduce the value of Max Versions, data that exceeds the new value will be deleted asynchronously.

  • If you increase the value of Max Versions, data that exceeds the old value, but has not been deleted, can be accessed again.

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