You need to migrate data from an existing database to a new platform that uses a different database system and schema. Which method would be the BEST choice to preserve the data and its structure so that it can be imported with minimal loss of integrity?
Full physical backup of the original database files
Export of only the most important tables
Flat CSV exports of each individual table
Logical database dump that includes schema and data
A logical database dump captures both the schema (tables, keys, constraints) and the data as SQL statements. Because the output is text-based SQL, it can be loaded into another database engine-even one with a different underlying storage format-while maintaining relationships and constraints. A full physical backup contains binary files tied to the original engine and cannot be restored on a different platform. Exporting only key tables risks missing dependencies, and flat CSV exports lack metadata such as primary and foreign keys, so referential integrity would have to be rebuilt manually.
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What is a database dump and why is it ideal for cross-system migration?
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What issues can arise when using a flat file export for database migration?
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How does a database backup differ from a database dump in migration contexts?
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CompTIA ITF+ FC0-U61 (V5)
Database Fundamentals
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