==MySQL=====MySQL에서 마이그레이션 히스토리 테이블 생성===다음 에러메시지가 출력되는 경우에====에러메시지==== EFMigrationsHistory' doesn't exist ====쿼리문====다음 쿼리문을 사용하여 테이블을 생성한다.<syntaxhighlight lang="sql">
CREATE TABLE IF NOT EXISTS __EFMigrationsHistory (
MigrationId varchar(150) NOT NULL,
</syntaxhighlight>
===MySQL Identity 적용===
====에러메시지====
InvalidOperationException: No coercion operator is defined between types 'System.Int16' and 'System.Boolean'.
===PostgreSQL===
====nuget package====
Install-Package Npgsql.EntityFrameworkCore.PostgreSQL
====connection string====
"User ID=damienbod;Password=1234;Host=localhost;Port=5432;Database=damienbod;Pooling=true;"
===모델===