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Adobe Exam AD0-E717 Topic 2 Question 39 Discussion

Actual exam question for Adobe's AD0-E717 exam

Question #: 39
Topic #: 2

[All AD0-E717 Questions]

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 Nu at Nov 14, 2024, 07:26 PM

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Amira

7 days ago

I'm not sure, but I think option A could also work if the developer wants more control over the data migration process.

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Vanesa

8 days ago

I agree with Louis, option B seems like the safest option to prevent data loss.

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Delmy

12 days ago

Option B all the way! Automatic data migration? Sign me up! Though I do wonder if the database has a 'rename' superpower or something.

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Twana

16 days ago

C looks like the way to go. Mapping the table and column names in the schema file is a clean and reliable approach.

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Louis

16 days ago

I think option B is the best choice because it says the data will be migrated automatically.

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Christiane

17 days ago

Option A sounds interesting, but I'm not sure if that's a valid action. Defining an onCreate attribute to migrate data seems a bit hacky.

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Roy

23 hours ago

C) Define the table and columns mapping in the db.schema_whitelist.json

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Helga

3 days ago

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

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Tijuana

9 days ago

A) Define onCreate=`migrateDataFromAnotherTable(old_table_name)` attribute in the table tag.

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Bernardo

24 days ago

I think option B is the correct answer. Declarative schema supports RENAME TABLE, so the data will be automatically migrated to the new table.

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Teri

12 days ago

I'm not sure, but I think option B is more reliable in this case.

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James

14 days ago

But what about option A? Would that also work?

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Phillip

16 days ago

I think so too, it's the safest option to prevent data loss.

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Shawn

18 days ago

I agree, option B seems like the best choice.

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