For migration, you will have the ability to suggest database name, table names and column names,

To specify database name, You may use the annotation @DB

@DB(name = "blog_db", tables = {Post.class,Comment.class,User.class}, version = 1) 

For table name, use
@Table(name="your_table_name")

 @Table(name = "post") public class Post extends Entity { } 

For column name, use
@Column(name="column_name")

 @Column(name = "created_at") public long getCreatedAt() { return created_at; } 

The column name needs to be provided for getter functions.

For foreign key in a ManyToOne mapping, you may specify column name as follows

 @ManyToOne @Column(name = "post_id") public Post getPost() { return fetch(this.post,new Post(){}); }