Online worksheet · 4 of 4

Preserve identity when changing a data model - Online practice 4

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 O4 and another lesson X4 share title 'Reading'. Submission S4 points to O4; attempt A4 also points to O4. Replacement N4 has new teaching, not proven equivalent. Policy: archive O4 from current navigation, retain historical links, and do not alter X4. No real migration is requested.

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