Online worksheet · 2 of 4

A view should not destroy source records - Online practice 2

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

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Fictional rows: A = nature/60 pages; B = nature/20; C = history/70; D = nature/page count missing. Rule: an unknown page count does NOT satisfy a pages-greater-than test; do not replace it with zero. Compare nature AND pages > 40 with nature OR pages > 40. Filtering makes a view and must preserve the source rows.

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