Definition
A delta can be defined in 2 ways, symmetric delta and directed delta. A symmetric delta can be expressed as:
- Δ(v1, v2) = (v1 \ v2) U (v2 \ v1),
where v1 and v2 represent two successive versions.
A directed delta, also called a change, is a sequence of (elementary) change operations which, when applied to one version v1, yields another version v2 (note the correspondence to transaction logs in databases).
Read more about this topic: Delta Encoding
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