# Variables
EventsColumns holds the columns for the "events" table.
EventsTable holds the schema information for the "events" table.
ResearchesColumns holds the columns for the "researches" table.
ResearchesTable holds the schema information for the "researches" table.
Tables holds all the tables in the schema.
UsersColumns holds the columns for the "users" table.
UsersTable holds the schema information for the "users" table.
WithDropColumn sets the drop column option to the migration.
WithDropIndex sets the drop index option to the migration.
WithForeignKeys enables creating foreign-key in schema DDL.
WithGlobalUniqueID sets the universal ids options to the migration.