Database Migration Service は、同種の移行パスごとに異なるフローを提供し、さまざまな機能をサポートしています。たとえば、Database Migration Service はデフォルトですべてのデータベースを移行します。PostgreSQL から AlloyDB への移行や SQL Server から Cloud SQL Server への移行など、一部の移行では、ソース インスタンスから既存または新しい宛先インスタンスにデータベースのサブセットを選択的に移行できます。
[[["わかりやすい","easyToUnderstand","thumb-up"],["問題の解決に役立った","solvedMyProblem","thumb-up"],["その他","otherUp","thumb-up"]],[["わかりにくい","hardToUnderstand","thumb-down"],["情報またはサンプルコードが不正確","incorrectInformationOrSampleCode","thumb-down"],["必要な情報 / サンプルがない","missingTheInformationSamplesINeed","thumb-down"],["翻訳に関する問題","translationIssue","thumb-down"],["その他","otherDown","thumb-down"]],["最終更新日 2025-09-05 UTC。"],[[["\u003cp\u003eHomogeneous migrations involve moving data between databases that utilize the same database technology.\u003c/p\u003e\n"],["\u003cp\u003eSuccessful homogeneous migrations preserve the integrity of all database components, including schema, data, and metadata.\u003c/p\u003e\n"],["\u003cp\u003eDatabase Migration Service provides varying migration flows and features depending on the specific homogeneous migration path.\u003c/p\u003e\n"],["\u003cp\u003eDatabase Migration Service supports homogeneous migrations to Cloud SQL for MySQL, PostgreSQL, SQL Server, and AlloyDB for PostgreSQL.\u003c/p\u003e\n"]]],[],null,["# Homogeneous migrations take place when you migrate data from a source database\nto a destination database that use the same database technology (have the same\ndatabase engine).\n\nA successful homogeneous migration maintains high fidelity of all migrated\ndatabase objects, including the schema, data, and metadata.\n\nDatabase Migration Service offers different flows and feature support for each homogeneous\nmigration path. For example, Database Migration Service migrates all your databases by\ndefault. In some migrations, such as PostgreSQL to AlloyDB and SQL Server to\nCloud SQL Server, you can selectively migrate a subset of databases from your\nsource instance to either an existing or new destination instance.\n\nFor more information, see supported scenarios.\n\nSupported scenarios\n-------------------\n\nDatabase Migration Service supports the following homogeneous migrations:\n\n- [Migrate to Cloud SQL for MySQL](/database-migration/docs/mysql/migration-src-and-dest)\n- [Migrate to Cloud SQL for PostgreSQL](/database-migration/docs/postgres/migration-src-and-dest)\n- [Migrate to AlloyDB for PostgreSQL](/database-migration/docs/postgresql-to-alloydb/migration-src-and-dest)\n- [Migrate to Cloud SQL for SQL Server](/database-migration/docs/sqlserver/scenario-overview)"]]
