text: const mongoose = require('mongoose');
  const ProductSchema = mongoose.Schema({
      product_id: {
          type: Number,
          required: true
      },
      product_name: {
          type: String,
          required: true
      },
      product_price: {
          type: Number,
          required: true
      },
      product_cost: {
          type: Number,
          required: true
      },
      listing_date: {
          type: Date,
          default: Date.now
      },
  
  
  });
  module.exports = mongoose.model('Product', ProductSchema);
  