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Answer: Cloud SQL
Cloud SQL is the recommended choice for migrating a PostgreSQL database to Google Cloud with minimal changes, as it is a regional SQL database managed service that supports PostgreSQL. Cloud Spanner, while a powerful global scale relational database, would incur higher operational costs than necessary for this scenario. Cloud Bigtable and Cloud Firestore are NoSQL databases and do not meet the relational database requirements specified. For more details, visit [Google Cloud SQL for PostgreSQL documentation](https://cloud.google.com/sql/docs/postgres).
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A team of researchers in Spain and France needs to migrate a PostgreSQL database to a managed service in Google Cloud with minimal changes. Which Google Cloud service would you recommend for this scenario?
A
Cloud Bigtable
B
Cloud SQL
C
Cloud Firestore
D
Cloud Spanner
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