1 / 5
Fill in: 'We ___ schema changes in backward-compatible steps.'
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We 'stage changes' — the standard collocation for rolling them out incrementally. The other options are less idiomatic here.
2 / 5
Fill in: 'A migration script will ___ the new column with a default value.'
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We 'backfill' a column — the standard database collocation for populating existing rows. The other options aren't idiomatic here.
3 / 5
Fill in: 'We ___ both schema versions during the transition window.'
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We 'support' both versions — the standard collocation for maintaining compatibility. The other options don't fit this sense.
4 / 5
Fill in: 'Before dropping the old column, we ___ that nothing still reads it.'
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We 'confirm' something — the standard, precise collocation for verifying a fact before a destructive step. The other options are less idiomatic here.
5 / 5
Fill in: 'We ___ the migration during low-traffic hours to reduce risk.'
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We 'schedule the migration' — the standard collocation for planning its timing. The other options aren't idiomatic here.