Reference → Data Dictionary → Schema Changes Between Releases
In general, the schema changes are additive between releases. This means that new features tend to require the addition of tables and fields while existing fields typically remain unchanged. This allows for increased compatibility between releases. However, this is a general guideline, not a guarantee. At any release (major or patch), we reserve the right to change the schema without any written or implied notice. Also be aware the Reports written by Professional Services are not guaranteed between releases.
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