const mongoose = require("mongoose"); const studentslistDB = new mongoose.Schema({ coursename:{ type: String, ref:'Certificate' }, issueremail:{ type: String }, issuername:{ type: String }, StudentName:{ type: String }, Grade:{ type: String }, StudentEmail:{ type: String }, certificatetype: { type: Number, }, Date:{ type: Date, default: Date.now } , img: { type: String, default :"image" } }); module.exports = mongoose.model("studentslist", studentslistDB);