diff --git a/pkg/models/hwcomponents/db.go b/pkg/models/hwcomponents/db.go
new file mode 100644
index 0000000..7d59d3f
--- /dev/null
+++ b/pkg/models/hwcomponents/db.go
@@ -0,0 +1,162 @@
+/*
+ * Copyright 2020-present Open Networking Foundation
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+// Package hwcomponents stores methods and functions related to hardware
+package hwcomponents
+
+import (
+	"context"
+	"encoding/json"
+	"errors"
+	"fmt"
+
+	copy "github.com/jinzhu/copier"
+	dmi "github.com/opencord/device-management-interface/go/dmi"
+
+	"github.com/opencord/opendevice-manager/pkg/db"
+	log "github.com/opencord/voltha-lib-go/v4/pkg/log"
+)
+
+// DBAddByName inserts Device Info record to DB with Name as Key
+func (rec *HwCompRecord) DBAddByUuid(ctx context.Context, deviceUuid string) error {
+	if rec.Uuid == "" || deviceUuid == "" {
+		logger.Errorw(ctx, "DBAddByUuid-failed-missing-uuid", log.Fields{"rec": rec, "dev-uuid": deviceUuid})
+		return errors.New("missing uuid")
+	}
+	key := fmt.Sprintf(DbPathUuidToRecord, deviceUuid, rec.Uuid)
+	b, _ := json.Marshal(rec)
+	entry := string(b)
+	err := db.Put(ctx, key, entry)
+	cache.store(deviceUuid, rec)
+	logger.Infow(ctx, "Inserting-hw-comp-info-to-Db-in-DBAddByUuid-method", log.Fields{"rec": rec, "error": err})
+	return err
+}
+
+// DBAddByName inserts Device Info record to DB with Name as Key
+func DBAddNameToUuidlookup(ctx context.Context, deviceUuid string, nameToUuidMap map[string]string) error {
+	if deviceUuid == "" || len(nameToUuidMap) == 0 {
+		logger.Errorw(ctx, "DBAddNameToUuidlookup-failed-missing-uuid-or-map", log.Fields{"map": nameToUuidMap, "dev-uuid": deviceUuid})
+		return errors.New("missing info")
+	}
+	key := fmt.Sprintf(DbPathNameToUuid, deviceUuid)
+	b, _ := json.Marshal(nameToUuidMap)
+	entry := string(b)
+	err := db.Put(ctx, key, entry)
+	logger.Infow(ctx, "DBAddNameToUuidlookup-method-complete", log.Fields{"map": nameToUuidMap, "error": err})
+	return err
+}
+
+// DBSaveHwCompsFromPhysicalInventory iterates through each children and store hwcomponents in db
+func DBSaveHwCompsFromPhysicalInventory(ctx context.Context, deviceUuid string, nameToUuidMap map[string]string, children []*dmi.Component) {
+	if len(children) == 0 {
+		return
+	}
+	for _, child := range children {
+		hwRec := new(HwCompRecord)
+		if err := copy.Copy(&hwRec, &child); hwRec.Name == "" {
+			logger.Errorw(ctx, "Failed-at-copying-hw-comp-from-inventory-list", log.Fields{"error": err, "child": child, "hw-comp": hwRec})
+			continue
+		}
+		if child.Uri != nil {
+			hwRec.Uri = child.Uri.Uri
+		}
+		if child.Uuid != nil {
+			hwRec.Uuid = child.Uuid.Uuid
+		}
+		for _, grandChild := range child.Children {
+			hwRec.Children = append(hwRec.Children, grandChild.Uuid.Uuid)
+		}
+		hwRec.DBAddByUuid(ctx, deviceUuid)
+		nameToUuidMap[hwRec.Name] = hwRec.Uuid
+		DBSaveHwCompsFromPhysicalInventory(ctx, deviceUuid, nameToUuidMap, child.Children)
+		logger.Infow(ctx, "Successful-at-creating-object-for-new-hw-info", log.Fields{"new-object": child})
+	}
+}
+
+// DBDelRecord deletes all entries for Device Info
+func DBDelAllHwComponents(ctx context.Context, deviceUuid string) error {
+
+	var err error
+
+	if deviceUuid == "" {
+		logger.Errorw(ctx, "deleting-all-hw-components-failed", log.Fields{"reason": "missing-device-uuid"})
+		return errors.New("missing device uuid")
+	}
+
+	key := fmt.Sprintf(DbPrefix, deviceUuid)
+	err = db.DelAll(ctx, key)
+	cache.delDevice(deviceUuid)
+	logger.Infow(ctx, "deleting-all-hw-components-completed", log.Fields{"key": key})
+
+	return err
+}
+
+// DBGetRecByUuid func reads hw comp record by uuid
+func DBGetRecByUuid(ctx context.Context, deviceUuid, hwCompUuid string) (*HwCompRecord, error) {
+	if deviceUuid == "" || hwCompUuid == "" {
+		logger.Errorw(ctx, "DBGetHwCompRec-failed-missing-uuid", log.Fields{"device-uuid": deviceUuid, "hw-comp-uuid": hwCompUuid})
+		return nil, errors.New("uuid field is empty")
+	}
+
+	if rec := cache.get(deviceUuid, hwCompUuid); rec != nil {
+		return rec, nil
+	}
+
+	key := fmt.Sprintf(DbPathUuidToRecord, deviceUuid, hwCompUuid)
+	entry, err := db.Read(ctx, key)
+	if err != nil {
+		logger.Errorw(ctx, "DBGetRecByUuid-failed-read-db", log.Fields{"error": err, "key": key})
+		return nil, err
+	}
+
+	rec := new(HwCompRecord)
+	if err = json.Unmarshal([]byte(entry), rec); err != nil {
+		logger.Errorw(ctx, "Failed-to-unmarshal-at-DBGetRecByUuid", log.Fields{"reason": err, "entry": entry})
+		return nil, err
+	}
+
+	cache.store(deviceUuid, rec)
+
+	logger.Debugw(ctx, "DBGetHwCompRec-completed", log.Fields{"device-uuid": deviceUuid, "hw-comp-uuid": hwCompUuid, "rec": rec})
+	return rec, nil
+}
+
+// DBGetRecByName func reads hw comp record by name
+func DBGetRecByName(ctx context.Context, deviceUuid, hwName string) (*HwCompRecord, error) {
+	if deviceUuid == "" || hwName == "" {
+		logger.Errorw(ctx, "DBGetRecByName-failed-missing-uuid", log.Fields{"device-uuid": deviceUuid, "hw-comp-name": hwName})
+		return nil, errors.New("name field is empty")
+	}
+	key := fmt.Sprintf(DbPathNameToUuid, deviceUuid)
+	entry, err := db.Read(ctx, key)
+	if err != nil {
+		logger.Errorw(ctx, "DBGetRecByName-failed-read-db", log.Fields{"error": err, "key": key})
+		return nil, err
+	}
+
+	nameToUuidMap := make(map[string]string)
+	if err = json.Unmarshal([]byte(entry), &nameToUuidMap); nameToUuidMap == nil || err != nil {
+		logger.Errorw(ctx, "Failed-to-unmarshal-at-DBGetRecByName", log.Fields{"reason": err, "entry": entry})
+		return nil, err
+	}
+
+	if hwUuid, ok := nameToUuidMap[hwName]; ok {
+		rec, err2 := DBGetRecByUuid(ctx, deviceUuid, hwUuid)
+		logger.Debugw(ctx, "DBGetRecByName-completed", log.Fields{"device-uuid": deviceUuid, "hw-comp-name": hwName, "rec": rec, "error": err2})
+	}
+
+	return nil, errors.New("name not found")
+}