diff --git a/app/Notificacao.php b/app/Notificacao.php
old mode 100644
new mode 100755
index cd6a717ea35c772145bc1a294f9937a693633a94..5e3e34118d71f2925a84b69d9c8a52a569999419
--- a/app/Notificacao.php
+++ b/app/Notificacao.php
@@ -12,7 +12,7 @@ class Notificacao extends Model
      * @var array
      */
     protected $fillable = [
-        'lido', 'tipo', 'destinatario_id', 'remetente_id', 'perfil_id', 'trabalho_id',
+        'lido', 'tipo', 'destinatario_id', 'remetente_id', 'perfil_id', 'trabalho_id', 'solicitacao_certificado_id',
     ];
 
     public function destinatario(){
@@ -26,4 +26,9 @@ class Notificacao extends Model
     public function trabalho(){
         return $this->belongsTo(Trabalho::class,'trabalho_id','id');
     }
+
+    public function solicitacaoCertificado()
+    {
+        return $this->belongsTo('\App\SolicitacaoCertificado', 'solicitacao_certificado_id');
+    }
 }
diff --git a/app/SolicitacaoCertificado.php b/app/SolicitacaoCertificado.php
new file mode 100755
index 0000000000000000000000000000000000000000..57e653af0d2893418ca49a1238818e4200d03db4
--- /dev/null
+++ b/app/SolicitacaoCertificado.php
@@ -0,0 +1,20 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class SolicitacaoCertificado extends Model
+{
+
+    protected $table = "solicitacoes_certificados";
+
+    protected $fillable = [
+        'trabalho_id'
+    ];
+
+    public function solicitacoesParticipantes()
+    {
+        return $this->hasMany('App\SolicitacaoParticipante', 'solicitacao_certificado_id');
+    }
+}
diff --git a/app/SolicitacaoParticipante.php b/app/SolicitacaoParticipante.php
new file mode 100644
index 0000000000000000000000000000000000000000..8bf3a420dd1f75310a80b6cb7dd1022906e65aa3
--- /dev/null
+++ b/app/SolicitacaoParticipante.php
@@ -0,0 +1,24 @@
+<?php
+
+namespace App;
+
+use Illuminate\Database\Eloquent\Model;
+
+class SolicitacaoParticipante extends Model
+{
+    protected $table = "solicitacoes_participantes";
+
+    protected $fillable = [
+        'solicitacao_certificado_id', 'user_id'
+    ];
+
+    public function solicitacaoCertificado()
+    {
+        return $this->belongsTo('App\SolicitacaoCertificado', 'solicitacao_certificado_id');
+    }
+
+    public function user()
+    {
+        return $this->belongsTo('App\User', 'user_id');
+    }
+}
diff --git a/app/Trabalho.php b/app/Trabalho.php
index 45752d0b9d2ba63445b727ae4d8977197b3968ad..6677f134c87bd266da50bef10e8d338b38eaa2d2 100755
--- a/app/Trabalho.php
+++ b/app/Trabalho.php
@@ -110,4 +110,9 @@ class Trabalho extends Model
   public function notificacoes(){
       return $this->hasMany(Notificacao::class, 'trabalho_id', 'id');
   }
+
+  public function solicitacoesCertificados()
+  {
+      return $this->hasMany(Certificado::class, 'trabalho_id');
+  }
 }
diff --git a/database/migrations/2022_03_18_083809_create_certificados_table.php b/database/migrations/2022_03_18_083809_create_certificados_table.php
new file mode 100755
index 0000000000000000000000000000000000000000..e16454eb0e07a62f24a1be52eb48b26cdda455df
--- /dev/null
+++ b/database/migrations/2022_03_18_083809_create_certificados_table.php
@@ -0,0 +1,31 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateCertificadosTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('solicitacoes_certificados', function (Blueprint $table) {
+            $table->bigIncrements('id');
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('solicitacoes_certificados');
+    }
+}
diff --git a/database/migrations/2022_03_21_122553_create_solicitacao_participantes_table.php b/database/migrations/2022_03_21_122553_create_solicitacao_participantes_table.php
new file mode 100644
index 0000000000000000000000000000000000000000..5d7b7594ecce29b4bd1af7abf346be2362554e54
--- /dev/null
+++ b/database/migrations/2022_03_21_122553_create_solicitacao_participantes_table.php
@@ -0,0 +1,37 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class CreateSolicitacaoParticipantesTable extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::create('solicitacoes_participantes', function (Blueprint $table) {
+            $table->bigIncrements('id');
+            $table->unsignedBigInteger('user_id');
+            $table->foreign('user_id')->references('id')->on('users');
+
+            $table->unsignedBigInteger('solicitacao_certificado_id');
+            $table->foreign('solicitacao_certificado_id')->references('id')->on('solicitacoes_certificados');
+
+            $table->timestamps();
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::dropIfExists('solicitacoes_participantes');
+    }
+}
diff --git a/database/migrations/2022_03_21_123012_add_solicitacao_certificado_to_notificacaos.php b/database/migrations/2022_03_21_123012_add_solicitacao_certificado_to_notificacaos.php
new file mode 100644
index 0000000000000000000000000000000000000000..c8c8d1ecb6ded4faa0854d4d0f67e14174f9a1dc
--- /dev/null
+++ b/database/migrations/2022_03_21_123012_add_solicitacao_certificado_to_notificacaos.php
@@ -0,0 +1,34 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+class AddSolicitacaoCertificadoToNotificacaos extends Migration
+{
+    /**
+     * Run the migrations.
+     *
+     * @return void
+     */
+    public function up()
+    {
+        Schema::table('notificacaos', function (Blueprint $table) {
+            $table->unsignedBigInteger('solicitacao_certificado_id')->nullable();
+            $table->foreign('solicitacao_certificado_id')->references('id')->on('solicitacoes_certificados');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     *
+     * @return void
+     */
+    public function down()
+    {
+        Schema::table('notificacaos', function (Blueprint $table) {
+            $table->dropForeign(['solicitacao_certificado_id']);
+            $table->dropColumn('solicitacao_certificado_id');
+        });
+    }
+}