id(); $table->foreignId('user_id')->constrained()->onDelete('cascade'); $table->string('specialization')->nullable(); $table->string('university')->nullable(); $table->integer('years_of_experience')->nullable(); $table->text('bio')->nullable(); $table->string('photo')->nullable(); $table->timestamps(); }); } /** * Reverse the migrations. */ public function down(): void { Schema::dropIfExists('researchers'); } };