diff --git a/db/schema/holidays.ts b/db/schema/holidays.ts
index 76d3e9e..9a53dd8 100644
--- a/db/schema/holidays.ts
+++ b/db/schema/holidays.ts
@@ -9,7 +9,7 @@ export const holidays = pgTable("holidays", {
 
     name: text("name").notNull(),
 
-    stateCode: text("state_code").notNull(),
+    state_code: text("state_code").notNull(),
 
     createdAt: timestamp("created_at", { withTimezone: true }).defaultNow(),
 })
diff --git a/db/schema/staff_time_entries.ts b/db/schema/staff_time_entries.ts
index 5932fa9..5159aa0 100644
--- a/db/schema/staff_time_entries.ts
+++ b/db/schema/staff_time_entries.ts
@@ -17,18 +17,18 @@ import {sql} from "drizzle-orm";
 export const stafftimeentries = pgTable("staff_time_entries", {
     id: uuid("id").primaryKey().defaultRandom(),
 
-    tenantId: bigint("tenant_id", { mode: "number" })
+    tenant_id: bigint("tenant_id", { mode: "number" })
         .notNull()
         .references(() => tenants.id),
 
-    userId: uuid("user_id")
+    user_id: uuid("user_id")
         .notNull()
         .references(() => authUsers.id, { onDelete: "cascade" }),
 
-    startedAt: timestamp("started_at", { withTimezone: true }).notNull(),
-    stoppedAt: timestamp("stopped_at", { withTimezone: true }),
+    started_at: timestamp("started_at", { withTimezone: true }).notNull(),
+    stopped_at: timestamp("stopped_at", { withTimezone: true }),
 
-    durationMinutes: integer("duration_minutes").generatedAlwaysAs(
+    duration_minutes: integer("duration_minutes").generatedAlwaysAs(
         sql`CASE 
       WHEN stopped_at IS NOT NULL 
       THEN (EXTRACT(epoch FROM (stopped_at - started_at)) / 60)
@@ -40,12 +40,12 @@ export const stafftimeentries = pgTable("staff_time_entries", {
 
     description: text("description"),
 
-    createdAt: timestamp("created_at", { withTimezone: true }).defaultNow(),
-    updatedAt: timestamp("updated_at", { withTimezone: true }).defaultNow(),
+    created_at: timestamp("created_at", { withTimezone: true }).defaultNow(),
+    updated_at: timestamp("updated_at", { withTimezone: true }).defaultNow(),
 
     archived: boolean("archived").notNull().default(false),
 
-    updatedBy: uuid("updated_by").references(() => authUsers.id),
+    updated_by: uuid("updated_by").references(() => authUsers.id),
 
     source: text("source"),
 
@@ -53,15 +53,15 @@ export const stafftimeentries = pgTable("staff_time_entries", {
 
     device: uuid("device"),
 
-    internalNote: text("internal_note"),
+    internal_note: text("internal_note"),
 
-    vacationReason: text("vacation_reason"),
-    vacationDays: numeric("vacation_days", { precision: 5, scale: 2 }),
+    vacation_reason: text("vacation_reason"),
+    vacation_days: numeric("vacation_days", { precision: 5, scale: 2 }),
 
-    approvedBy: uuid("approved_by").references(() => authUsers.id),
-    approvedAt: timestamp("approved_at", { withTimezone: true }),
+    approved_by: uuid("approved_by").references(() => authUsers.id),
+    approved_at: timestamp("approved_at", { withTimezone: true }),
 
-    sickReason: text("sick_reason"),
+    sick_reason: text("sick_reason"),
 })
 
 export type StaffTimeEntry = typeof stafftimeentries.$inferSelect
diff --git a/db/schema/staff_time_entry_connects.ts b/db/schema/staff_time_entry_connects.ts
index 13cb51f..dbdd3a3 100644
--- a/db/schema/staff_time_entry_connects.ts
+++ b/db/schema/staff_time_entry_connects.ts
@@ -10,17 +10,17 @@ import {
 import { stafftimeentries } from "./staff_time_entries"
 import {sql} from "drizzle-orm";
 
-export const staffTimeEntryConnects = pgTable("staff_time_entry_connects", {
+export const stafftimenetryconnects = pgTable("staff_time_entry_connects", {
     id: uuid("id").primaryKey().defaultRandom(),
 
-    timeEntryId: uuid("time_entry_id")
+    stafftimeentry: uuid("time_entry_id")
         .notNull()
         .references(() => stafftimeentries.id, { onDelete: "cascade" }),
 
-    projectId: bigint("project_id", { mode: "number" }), // referenziert später projects.id
+    project_id: bigint("project_id", { mode: "number" }), // referenziert später projects.id
 
-    startedAt: timestamp("started_at", { withTimezone: true }).notNull(),
-    stoppedAt: timestamp("stopped_at", { withTimezone: true }).notNull(),
+    started_at: timestamp("started_at", { withTimezone: true }).notNull(),
+    stopped_at: timestamp("stopped_at", { withTimezone: true }).notNull(),
 
     durationMinutes: integer("duration_minutes").generatedAlwaysAs(
         sql`(EXTRACT(epoch FROM (stopped_at - started_at)) / 60)`
@@ -28,11 +28,11 @@ export const staffTimeEntryConnects = pgTable("staff_time_entry_connects", {
 
     notes: text("notes"),
 
-    createdAt: timestamp("created_at", { withTimezone: true }).defaultNow(),
-    updatedAt: timestamp("updated_at", { withTimezone: true }).defaultNow(),
+    created_at: timestamp("created_at", { withTimezone: true }).defaultNow(),
+    updated_at: timestamp("updated_at", { withTimezone: true }).defaultNow(),
 })
 
 export type StaffTimeEntryConnect =
-    typeof staffTimeEntryConnects.$inferSelect
+    typeof stafftimenetryconnects.$inferSelect
 export type NewStaffTimeEntryConnect =
-    typeof staffTimeEntryConnects.$inferInsert
+    typeof stafftimenetryconnects.$inferInsert