diff --git a/Client.java b/Client.java
new file mode 100644
index 00000000..05380775
--- /dev/null
+++ b/Client.java
@@ -0,0 +1,57 @@
+package entities;
+
+import javax.persistence.*;
+
+@Entity
+public class Client {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(nullable = false, length = 50)
+    private String name;
+
+    @Column(nullable = false)
+    private int contact;
+
+    @ManyToOne
+    @JoinColumn(name = "financialAdvisorId", nullable = false)
+    private FinancialAdvisor financialAdvisor;
+
+    public Client() {
+    }
+
+    public Client(String name, int contact, FinancialAdvisor financialAdvisor) {
+        this.name = name;
+        this.contact = contact;
+        this.financialAdvisor = financialAdvisor;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getContact() {
+        return contact;
+    }
+
+    public void setContact(int contact) {
+        this.contact = contact;
+    }
+
+    public FinancialAdvisor getFinancialAdvisor() {
+        return financialAdvisor;
+    }
+
+    public void setFinancialAdvisor(FinancialAdvisor financialAdvisor) {
+        this.financialAdvisor = financialAdvisor;
+    }
+}
diff --git a/FinancialAdvisor.java b/FinancialAdvisor.java
new file mode 100644
index 00000000..9443b109
--- /dev/null
+++ b/FinancialAdvisor.java
@@ -0,0 +1,44 @@
+package entities;
+
+import javax.persistence.*;
+
+@Entity
+public class FinancialAdvisor {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(nullable = false, length = 50)
+    private String name;
+
+    @Column(nullable = false)
+    private int contact;
+
+    public FinancialAdvisor() {
+    }
+
+    public FinancialAdvisor(String name, int contact) {
+        this.name = name;
+        this.contact = contact;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public int getContact() {
+        return contact;
+    }
+
+    public void setContact(int contact) {
+        this.contact = contact;
+    }
+}
diff --git a/Portfolio.java b/Portfolio.java
new file mode 100644
index 00000000..003d7fed
--- /dev/null
+++ b/Portfolio.java
@@ -0,0 +1,33 @@
+package entities;
+
+import javax.persistence.*;
+
+@Entity
+public class Portfolio {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @ManyToOne
+    @JoinColumn(name = "clientId", nullable = false)
+    private Client client;
+
+    public Portfolio() {
+    }
+
+    public Portfolio(Client client) {
+        this.client = client;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public Client getClient() {
+        return client;
+    }
+
+    public void setClient(Client client) {
+        this.client = client;
+    }
+}
diff --git a/Security.java b/Security.java
new file mode 100644
index 00000000..e4a263a6
--- /dev/null
+++ b/Security.java
@@ -0,0 +1,94 @@
+package entities;
+
+import javax.persistence.*;
+import java.util.Date;
+
+@Entity
+public class Security {
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+
+    @Column(nullable = false, length = 50)
+    private String name;
+
+    @Column(nullable = false, length = 30)
+    private String category;
+
+    @Column(nullable = false)
+    private Date purchaseDate;
+
+    @Column(nullable = false)
+    private int purchasePrice;
+
+    @Column(nullable = false)
+    private int quantity;
+
+    @ManyToOne
+    @JoinColumn(name = "portfolioId", nullable = false)
+    private Portfolio portfolio;
+
+    public Security() {
+    }
+
+    public Security(String name, String category, Date purchaseDate, int purchasePrice, int quantity, Portfolio portfolio) {
+        this.name = name;
+        this.category = category;
+        this.purchaseDate = purchaseDate;
+        this.purchasePrice = purchasePrice;
+        this.quantity = quantity;
+        this.portfolio = portfolio;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public String getName() {
+        return name;
+    }
+
+    public void setName(String name) {
+        this.name = name;
+    }
+
+    public String getCategory() {
+        return category;
+    }
+
+    public void setCategory(String category) {
+        this.category = category;
+    }
+
+    public Date getPurchaseDate() {
+        return purchaseDate;
+    }
+
+    public void setPurchaseDate(Date purchaseDate) {
+        this.purchaseDate = purchaseDate;
+    }
+
+    public int getPurchasePrice() {
+        return purchasePrice;
+    }
+
+    public void setPurchasePrice(int purchasePrice) {
+        this.purchasePrice = purchasePrice;
+    }
+
+    public int getQuantity() {
+        return quantity;
+    }
+
+    public void setQuantity(int quantity) {
+        this.quantity = quantity;
+    }
+
+    public Portfolio getPortfolio() {
+        return portfolio;
+    }
+
+    public void setPortfolio(Portfolio portfolio) {
+        this.portfolio = portfolio;
+    }
+}