Online worksheet · 3 of 4

Preserve identity when changing a data model - Online practice 3

Read the information, then answer the questions. An adult may read the instructions aloud. Show your working where asked.

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Invented records in tenant T: old lesson O3 and another lesson X3 share title 'Reading'. Submission S3 points to O3; attempt A3 also points to O3. Replacement N3 has new teaching, not proven equivalent. Policy: archive O3 from current navigation, retain historical links, and do not alter X3. No real migration is requested.

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