add notNull em coluna pad_id

database/migrations/2022_03_22_225548_create_ensino_aulas_table.php

@@ -22,7 +22,7 @@ class CreateEnsinoAulasTable extends Migration
             $table->tinyInteger('modalidade')->notNull();
             $table->integer('ch_semanal')->notNull();
             $table->integer('ch_total')->notNull();
-            $table->foreignId('pad_id');
+            $table->foreignId('pad_id')->notNull();
             $table->timestamps();
         });
     }

database/migrations/2022_03_23_184642_create_ensino_coordenacao_table.php

@@ -21,7 +21,7 @@ class CreateEnsinoCoordenacaoTable extends Migration
             $table->tinyInteger('nivel')->notNull();
             $table->tinyInteger('modalidade')->notNull();
             $table->integer('ch_semanal')->notNull();
-            $table->foreignId('pad_id');
+            $table->foreignId('pad_id')->notNull();
             $table->timestamps();
         });
     }

database/migrations/2022_03_23_190559_create_ensino_orientacoes_table.php

@@ -22,7 +22,7 @@ class CreateEnsinoOrientacoesTable extends Migration
             $table->tinyInteger('type_orientacao')->notNull();
             $table->tinyInteger('numero_orientandos')->nullable();
             $table->integer('ch_semanal')->notNull();
-            $table->foreignId('pad_id');
+            $table->foreignId('pad_id')->notNull();
             $table->timestamps();
         });
     }