import mongoose from 'mongoose' const StandardSchema = new mongoose.Schema( { batch: { type: String, require: true, unique: true, }, im: { type: String, }, ass: { type: String, }, calibration_date: { type: Date, }, expire_date: { type: Date, }, location: { type: String, }, }, { timestamps: true } ) const Standard = mongoose.model('Standard', StandardSchema) export default Standard