Schema migration은 왜 Flyway와 Liquibase로 관리할까요?

create table todos (
    id bigint generated by default as identity primary key,
    title varchar(200) not null,
    done boolean not null,
    created_at timestamp not null
);

src/main/resources/
└── db/
    └── migration/
        ├── V1__create_todos_table.sql
        ├── V2__add_due_date_to_todos.sql
        └── V3__create_todo_tags_table.sql

-- src/main/resources/db/migration/V1__create_todos_table.sql
create table todos (
    id bigint generated by default as identity primary key,
    title varchar(200) not null,
    done boolean not null,
    created_at timestamp not null
);

public class Todo {

    private Long id;
    private String title;
    private boolean done;
    private LocalDate dueDate;
}

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-flyway'
    runtimeOnly 'org.postgresql:postgresql'
}

src/main/resources/
└── db/
    └── migration/
        ├── V1__create_todos_table.sql
        └── V2__add_todos_due_date.sql

# src/main/resources/db/changelog/db.changelog-master.yaml
databaseChangeLog:
  - changeSet:
      id: 1-create-todos-table
      author: aha-notes
      changes:
        - createTable:
            tableName: todos
            columns:
              - column:
                  name: id
                  type: bigint
                  autoIncrement: true
                  constraints:
                    primaryKey: true
                    nullable: false
              - column:
                  name: title
                  type: varchar(200)
                  constraints:
                    nullable: false
              - column:
                  name: done
                  type: boolean
                  defaultValueBoolean: false
                  constraints:
                    nullable: false

dependencies {
    implementation 'org.springframework.boot:spring-boot-starter-data-jpa'
    implementation 'org.springframework.boot:spring-boot-starter-liquibase'
    runtimeOnly 'org.postgresql:postgresql'
}

./gradlew test