diff --git a/drizzle/schema.ts b/drizzle/schema.ts
index 7abf094a..14c140fc 100644
--- a/drizzle/schema.ts
+++ b/drizzle/schema.ts
@@ -1,4 +1,11 @@
-import { pgTable, serial, text } from "drizzle-orm/pg-core";
+import {
+  date,
+  integer,
+  json,
+  pgTable,
+  serial,
+  text,
+} from "drizzle-orm/pg-core";
 
 export const organizations = pgTable("organizations", {
   id: serial("id").primaryKey(),
@@ -17,9 +24,56 @@ export const projects = pgTable("projects", {
 
 export const protocols = pgTable("protocols", {
   id: serial("id").primaryKey(),
+  hash: text("hash").notNull().unique(),
   name: text("name").notNull(),
-  slug: text("slug").notNull().unique(),
+  schemaVersion: integer("schema_version").notNull(),
+  description: text("description"),
+  importedAt: date("imported_at").notNull().defaultNow(),
+  lastModified: date("last_modified").notNull(),
+  stages: json("stages").notNull(),
+  codebook: json("codebook").notNull(),
   projectId: serial("project_id").references(() => projects.id, {
     onDelete: "cascade",
   }),
 });
+
+export const protocolsAssets = pgTable("protocols_assets", {
+  protocolId: serial("protocol_id").references(() => protocols.id, {
+    onDelete: "cascade",
+  }),
+  assetId: text("asset_id").references(() => assets.assetId, {
+    onDelete: "cascade",
+  }),
+});
+
+export const assets = pgTable("assets", {
+  key: text("key").primaryKey(),
+  assetId: text("asset_id").notNull().unique(),
+  name: text("name").notNull(),
+  type: text("type").notNull(),
+  url: text("url").notNull(),
+  size: integer("size").notNull(),
+});
+
+export const interviews = pgTable("interviews", {
+  id: text("id").primaryKey(),
+  startTime: date("start_time").notNull().defaultNow(),
+  finishTime: date("finish_time"),
+  exportTime: date("export_time"),
+  lastUpdated: date("last_updated").notNull().defaultNow(),
+  network: json("network").notNull(),
+  participantId: text("participant_id").references(() => participants.id, {
+    onDelete: "cascade",
+  }),
+  protocolId: text("protocol_id").references(() => protocols.id, {
+    onDelete: "cascade",
+  }),
+  currentStep: integer("current_step").notNull().default(0),
+  stageMetadata: json("stage_metadata"),
+});
+
+export const participants = pgTable("participants", {
+  id: text("id").primaryKey(),
+  identifier: text("identifier").notNull().unique(),
+  label: text("label"),
+});