Có nên khởi tạo các foreign Key giữa các model trong Spring Boot?

Mình đang dùng Spring Boot để tạo ra 1 api Log_SMS mình đang không hiểu ở chổ là nên tạo các foreign key giữa các bảng trong code hay là dùng workbench để tạo. Khi mình dùng thử foreign key trong code thì khi gửi request post lên server thì mình thấy nó hơi phức tạp. Lỗi sai dữ liệu liên tục Sms.java

package com.logsms.logsms.model;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.*;
import javax.validation.constraints.NotBlank;

import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import com.fasterxml.jackson.annotation.JsonIgnoreProperties;

@Entity
@Table(name = "sms")
@EntityListeners(AuditingEntityListener.class)
@JsonIgnoreProperties(value = {"createAt"}, allowGetters = true)
public class Sms implements Serializable{
	/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Long id;
	
	@Enumerated(EnumType.STRING)
	private TypeSend typeSend;
	
	@ManyToOne
	@JoinTable(name = "sender_sms",
	joinColumns = @JoinColumn(name = "sms_id"),
	inverseJoinColumns = @JoinColumn(name = "sender_id"))
	private Sender sender;
	
	@ManyToOne
	@JoinTable(name = "provider_sms", 
	joinColumns = @JoinColumn(name = "sms_id"),
	inverseJoinColumns = @JoinColumn(name = "provider_id"))
	private Provider provider;
	
	@NotBlank
	private String numberPhone;
	
	
	@NotBlank
	private String context;
	
	private Boolean status = false;

	@Column(nullable = false, updatable = false)
	@Temporal(TemporalType.TIMESTAMP)
	@CreatedDate
	private Date createdDate;
	
	private Date sendedDate;
	
	
	public Sms() {}
	
	public Sms(String context, String numberPhone) {
		this.context = context;
		this.numberPhone = numberPhone;
	}
	
	public Long getId() {
		return id;
	}

	public void setId(Long id) {
		this.id = id;
	}
	

	public Sender getSender() {
		return sender;
	}
	public void setSender(Sender sender) {
		this.sender = sender;
	}
	public Provider getProvider() {
		return provider;
	}
	public void setProvider(Provider provider) {
		this.provider = provider;
	}
	public String getContext() {
		return context;
	}

	public void setContext(String context) {
		this.context = context;
	}

	public Boolean getStatus() {
		return status;
	}

	public void setStatus(Boolean status) {
		this.status = status;
	}

	public Date getCreateDate() {
		return createdDate;
	}


	public Date getSendedDate() {
		return sendedDate;
	}

	
	public String getNumberPhone() {
		return numberPhone;
	}

	public void setNumberPhone(String numberPhone) {
		this.numberPhone = numberPhone;
	}
}

Provider.java

package com.logsms.logsms.model;



import javax.persistence.*;

@Entity
@Table(name = "provider")
public class Provider {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Long id;
	
	private String name;

	public void setName(String name) {
		this.name = name;
	}

	public Long getId() {
		return id;
	}

	public Provider(String name) {
		this.name = name;
	}

	public String getName() {
		return name;
	}
}

Sender.java

package com.logsms.logsms.model;

import javax.persistence.*;


@Entity
@Table(name = "sender")
public class Sender {
	@Id
	@GeneratedValue(strategy = GenerationType.IDENTITY)
	private Long id;
	
	private String name;
	
	public Sender(String name) {
		this.name = name;
	}

	public Sender() {}

	public void setId(Long id) {
		this.id = id;
	}

	public void setName(String name) {
		this.name = name;
	}

	public Long getId() {
		return id;
	}

	public String getName() {
		return name;
	}
	
	
	
}