diff --git a/src/entity/unit/inspection/inspection.ts b/src/entity/unit/inspection/inspection.ts
index 00faf98..1bcbde4 100644
--- a/src/entity/unit/inspection/inspection.ts
+++ b/src/entity/unit/inspection/inspection.ts
@@ -29,10 +29,10 @@ export class inspection {
   @Column()
   inspectionVersionedPlanId: string;
 
-  @Column()
+  @Column({ nullable: true, default: null })
   equipmentId?: string;
 
-  @Column()
+  @Column({ nullable: true, default: null })
   vehicleId?: string;
 
   @ManyToOne(() => inspectionPlan, {
diff --git a/src/entity/unit/inspection/inspectionPlan.ts b/src/entity/unit/inspection/inspectionPlan.ts
index b2a43eb..1e9b2e3 100644
--- a/src/entity/unit/inspection/inspectionPlan.ts
+++ b/src/entity/unit/inspection/inspectionPlan.ts
@@ -21,10 +21,10 @@ export class inspectionPlan {
   @CreateDateColumn()
   createdAt: Date;
 
-  @Column()
+  @Column({ nullable: true, default: null })
   equipmentTypeId?: string;
 
-  @Column()
+  @Column({ nullable: true, default: null })
   vehicleTypeId?: string;
 
   @ManyToOne(() => equipmentType, {
diff --git a/src/entity/unit/wearable/wearable.ts b/src/entity/unit/wearable/wearable.ts
index 0313997..d1168d6 100644
--- a/src/entity/unit/wearable/wearable.ts
+++ b/src/entity/unit/wearable/wearable.ts
@@ -28,7 +28,7 @@ export class wearable {
   @Column()
   wearableTypeId: string;
 
-  @Column()
+  @Column({ nullable: true, default: null })
   wearerId?: string;
 
   @ManyToOne(() => wearableType, {
diff --git a/src/migrations/baseSchemaTables/inspection.ts b/src/migrations/baseSchemaTables/inspection.ts
index bfa480a..fbca0ab 100644
--- a/src/migrations/baseSchemaTables/inspection.ts
+++ b/src/migrations/baseSchemaTables/inspection.ts
@@ -1,4 +1,4 @@
-import { Table, TableForeignKey, TableUnique, Unique } from "typeorm";
+import { Table, TableForeignKey, TableUnique } from "typeorm";
 import { getTypeByORM, isUUIDPrimary, getDefaultByORM } from "../ormHelper";
 
 export const inspection_plan_table = new Table({
@@ -8,9 +8,9 @@ export const inspection_plan_table = new Table({
     { name: "title", ...getTypeByORM("varchar") },
     { name: "inspectionInterval", ...getTypeByORM("varchar") },
     { name: "remindTime", ...getTypeByORM("varchar") },
-    { name: "createdAt", ...getTypeByORM("date"), default: getDefaultByORM("currentTimestamp") },
-    { name: "equipmentTypeId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "vehicleTypeId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
+    { name: "createdAt", ...getTypeByORM("datetime"), default: getDefaultByORM("currentTimestamp") },
+    { name: "equipmentTypeId", ...getTypeByORM("uuid", true) },
+    { name: "vehicleTypeId", ...getTypeByORM("uuid", true) },
   ],
   foreignKeys: [
     new TableForeignKey({
@@ -35,7 +35,7 @@ export const inspection_versioned_plan_table = new Table({
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
     { name: "version", ...getTypeByORM("int"), default: getDefaultByORM("number", 0) },
-    { name: "createdAt", ...getTypeByORM("date"), default: getDefaultByORM("currentTimestamp") },
+    { name: "createdAt", ...getTypeByORM("datetime"), default: getDefaultByORM("currentTimestamp") },
     { name: "inspectionPlanId", ...getTypeByORM("uuid") },
   ],
   foreignKeys: [
@@ -62,8 +62,8 @@ export const inspection_point_table = new Table({
     { name: "title", ...getTypeByORM("varchar") },
     { name: "description", ...getTypeByORM("text") },
     { name: "type", ...getTypeByORM("varchar") },
-    { name: "min", ...getTypeByORM("int", true), default: getDefaultByORM("null") },
-    { name: "max", ...getTypeByORM("int", true), default: getDefaultByORM("null") },
+    { name: "min", ...getTypeByORM("int", true) },
+    { name: "max", ...getTypeByORM("int", true) },
     { name: "sort", ...getTypeByORM("int"), default: getDefaultByORM("number", 0) },
     { name: "versionedPlanId", ...getTypeByORM("uuid") },
   ],
@@ -83,13 +83,13 @@ export const inspection_table = new Table({
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
     { name: "context", ...getTypeByORM("text") },
-    { name: "createdAt", ...getTypeByORM("date"), default: getDefaultByORM("currentTimestamp") },
+    { name: "createdAt", ...getTypeByORM("datetime"), default: getDefaultByORM("currentTimestamp") },
     { name: "finishedAt", ...getTypeByORM("date", true) },
     { name: "nextInspection", ...getTypeByORM("date", true) },
     { name: "inspectionPlanId", ...getTypeByORM("uuid") },
     { name: "inspectionVersionedPlanId", ...getTypeByORM("uuid") },
-    { name: "equipmentId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "vehicleId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
+    { name: "equipmentId", ...getTypeByORM("uuid", true) },
+    { name: "vehicleId", ...getTypeByORM("uuid", true) },
   ],
   foreignKeys: [
     new TableForeignKey({
diff --git a/src/migrations/baseSchemaTables/unit.ts b/src/migrations/baseSchemaTables/unit.ts
index aec48b3..4d18e11 100644
--- a/src/migrations/baseSchemaTables/unit.ts
+++ b/src/migrations/baseSchemaTables/unit.ts
@@ -5,11 +5,11 @@ export const equipment_table = new Table({
   name: "equipment",
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
-    { name: "code", ...getTypeByORM("varchar", true), default: getDefaultByORM("null"), isUnique: true },
+    { name: "code", ...getTypeByORM("varchar", true), isUnique: true },
     { name: "name", ...getTypeByORM("varchar") },
     { name: "location", ...getTypeByORM("varchar") },
     { name: "commissioned", ...getTypeByORM("date") },
-    { name: "decommissioned", ...getTypeByORM("date", true), default: getDefaultByORM("null") },
+    { name: "decommissioned", ...getTypeByORM("date", true) },
     { name: "equipmentTypeId", ...getTypeByORM("uuid") },
   ],
   foreignKeys: [
@@ -28,7 +28,7 @@ export const equipment_type_table = new Table({
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
     { name: "type", ...getTypeByORM("varchar"), isUnique: true },
-    { name: "description", ...getTypeByORM("text") },
+    { name: "description", ...getTypeByORM("text", true) },
   ],
 });
 
@@ -36,11 +36,11 @@ export const vehicle_table = new Table({
   name: "vehicle",
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
-    { name: "code", ...getTypeByORM("varchar", true), default: getDefaultByORM("null"), isUnique: true },
+    { name: "code", ...getTypeByORM("varchar", true), isUnique: true },
     { name: "name", ...getTypeByORM("varchar") },
     { name: "location", ...getTypeByORM("varchar") },
     { name: "commissioned", ...getTypeByORM("date") },
-    { name: "decommissioned", ...getTypeByORM("date", true), default: getDefaultByORM("null") },
+    { name: "decommissioned", ...getTypeByORM("date", true) },
     { name: "vehicleTypeId", ...getTypeByORM("uuid") },
   ],
   foreignKeys: [
@@ -59,7 +59,7 @@ export const vehicle_type_table = new Table({
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
     { name: "type", ...getTypeByORM("varchar"), isUnique: true },
-    { name: "description", ...getTypeByORM("text") },
+    { name: "description", ...getTypeByORM("text", true) },
   ],
 });
 
@@ -67,13 +67,13 @@ export const wearable_table = new Table({
   name: "wearable",
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
-    { name: "code", ...getTypeByORM("varchar", true), default: getDefaultByORM("null"), isUnique: true },
+    { name: "code", ...getTypeByORM("varchar", true), isUnique: true },
     { name: "name", ...getTypeByORM("varchar") },
     { name: "location", ...getTypeByORM("varchar") },
     { name: "commissioned", ...getTypeByORM("date") },
-    { name: "decommissioned", ...getTypeByORM("date", true), default: getDefaultByORM("null") },
+    { name: "decommissioned", ...getTypeByORM("date", true) },
     { name: "wearableTypeId", ...getTypeByORM("uuid") },
-    { name: "wearerId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
+    { name: "wearerId", ...getTypeByORM("uuid", true) },
   ],
   foreignKeys: [
     new TableForeignKey({
@@ -98,6 +98,6 @@ export const wearable_type_table = new Table({
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
     { name: "type", ...getTypeByORM("varchar"), isUnique: true },
-    { name: "description", ...getTypeByORM("text") },
+    { name: "description", ...getTypeByORM("text", true) },
   ],
 });
diff --git a/src/migrations/baseSchemaTables/unit_extend.ts b/src/migrations/baseSchemaTables/unit_extend.ts
index 3f78910..43bece7 100644
--- a/src/migrations/baseSchemaTables/unit_extend.ts
+++ b/src/migrations/baseSchemaTables/unit_extend.ts
@@ -5,16 +5,16 @@ export const damage_report_table = new Table({
   name: "damage_report",
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
-    { name: "reportedAt", ...getTypeByORM("date"), default: getDefaultByORM("currentTimestamp") },
+    { name: "reportedAt", ...getTypeByORM("datetime"), default: getDefaultByORM("currentTimestamp") },
     { name: "status", ...getTypeByORM("varchar") },
     { name: "done", ...getTypeByORM("boolean"), default: getDefaultByORM("boolean", false) },
     { name: "description", ...getTypeByORM("text") },
     { name: "reportedBy", ...getTypeByORM("varchar") },
     { name: "imageCount", ...getTypeByORM("int"), default: getDefaultByORM("number", 0) },
-    { name: "equipmentId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "vehicleId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "wearableId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "maintenanceId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
+    { name: "equipmentId", ...getTypeByORM("uuid", true) },
+    { name: "vehicleId", ...getTypeByORM("uuid", true) },
+    { name: "wearableId", ...getTypeByORM("uuid", true) },
+    { name: "maintenanceId", ...getTypeByORM("uuid", true) },
   ],
   foreignKeys: [
     new TableForeignKey({
@@ -52,13 +52,13 @@ export const maintenance_table = new Table({
   name: "maintenance",
   columns: [
     { name: "id", ...getTypeByORM("uuid"), ...isUUIDPrimary },
-    { name: "createdAt", ...getTypeByORM("date"), default: getDefaultByORM("currentTimestamp") },
+    { name: "createdAt", ...getTypeByORM("datetime"), default: getDefaultByORM("currentTimestamp") },
     { name: "status", ...getTypeByORM("varchar") },
     { name: "done", ...getTypeByORM("boolean"), default: getDefaultByORM("boolean", false) },
     { name: "description", ...getTypeByORM("text") },
-    { name: "equipmentId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "vehicleId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
-    { name: "wearableId", ...getTypeByORM("uuid", true), default: getDefaultByORM("null") },
+    { name: "equipmentId", ...getTypeByORM("uuid", true) },
+    { name: "vehicleId", ...getTypeByORM("uuid", true) },
+    { name: "wearableId", ...getTypeByORM("uuid", true) },
   ],
   foreignKeys: [
     new TableForeignKey({