Adobe Exam AD0-E717 Topic 10 Question 47 Discussion

Actual exam question for Adobe's AD0-E717 exam

Question #: 47
Topic #: 10

In a new release of a module, a developer decides to rename a table that was defined in the earlier versions. Which action, if any, allows the developer to prevent data loss?

ADefine onCreate='migrateDataFromAnotherTable(old_table_name)' attribute in the table tag.

BDeclarative schema supports RENAME TABLE', so the data will be migrated to the new table automatically.

CDefine the table and columns mapping in the db.schema_whitelist.json

Show Suggested Answer

Suggested Answer: C

When renaming a table in Magento, to prevent data loss, the developer must define the table and its columns mapping in the db_schema_whitelist.json file. This declarative schema approach ensures that the data migration tool knows about the changes and can migrate data from the old table to the newly named table without losing any data.

by Barb at May 04, 2025, 11:30 AM

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1 months ago

I think Option C is the way to go. Defining the table and column mapping is a more reliable way to handle schema changes.

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Tasia

4 days ago

Defining the mapping in the JSON file can help ensure smooth data migration.

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Luann

28 days ago

I think using db.schema_whitelist.json is a good practice for preventing data loss.

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Aron

1 months ago

I agree, Option C seems like the most reliable choice.

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Kirk

2 months ago

Option B seems correct, but I'm not sure if it's supported in all database systems.

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