pom.xml
 
<dependency>
  <groupId>org.hibernate</groupId>
  <artifactId>hibernate-core</artifactId>
  <version>5.4.13.Final</version>
  <type>pom</type>
</dependency>
       

pom.xml
        <hibernate.version>5.3.7.Final</hibernate.version>

Add to your persistence.xml

<property name="hibernate.hbm2ddl.auto" value="create-drop"/>

javax.persistence.sql-load-script-source

@Entity(name="BoardMetamodel")
@Table(name="CMP3_MM_BOARD")
public class Board implements java.io.Serializable{
    // The M:1 side is the owning side for "circuitBoards"
    @ManyToOne(fetch=EAGER)
    @JoinTable(name="CMP3_MM_COMPUTER_MM_BOARD", 
            joinColumns = @JoinColumn(name="BOARD_ID"), 
            inverseJoinColumns = @JoinColumn(name="COMPUTER_ID"))   
    private Computer computer;
}
 
@Entity(name="ComputerMetamodel")
@Table(name="CMP3_MM_COMPUTER")
public class Computer implements java.io.Serializable {
    // Inverse side 
    @OneToMany(cascade=ALL, mappedBy="computer")
    private Collection<Board> circuitBoards;
}