diff --git a/packages/server/src/api/controllers/datasource.js b/packages/server/src/api/controllers/datasource.js
index 346a15ab89..43510d092e 100644
--- a/packages/server/src/api/controllers/datasource.js
+++ b/packages/server/src/api/controllers/datasource.js
@@ -6,7 +6,6 @@ const {
 } = require("../../db/utils")
 const { integrations } = require("../../integrations")
 const plusIntegrations = require("../../integrations/plus")
-const PostgresConnector = require("../../integrations/plus/Postgres")
 
 exports.fetch = async function (ctx) {
   const database = new CouchDB(ctx.appId)
@@ -65,7 +64,7 @@ exports.find = async function (ctx) {
 
 // TODO: merge endpoint with main datasource endpoint
 exports.plus = async function (ctx) {
-  const db = new CouchDB(ctx.appId)
+  const db = new CouchDB("testapp123")
 
   const PlusConnector = plusIntegrations[ctx.request.body.source]
 
@@ -73,11 +72,11 @@ exports.plus = async function (ctx) {
   await connector.init()
 
   const datasource = {
-    _id: generateDatasourceID(),
-    type: "datasource:plus",
+    _id: generateDatasourceID({ plus: true }),
+    type: "datasource_plus",
+    relationships: [],
     ...ctx.request.body,
     entities: connector.tables,
-    relationships: {},
   }
 
   const response = await db.post(datasource)
diff --git a/packages/server/src/api/routes/datasource.js b/packages/server/src/api/routes/datasource.js
index 791118b336..928fdcfca9 100644
--- a/packages/server/src/api/routes/datasource.js
+++ b/packages/server/src/api/routes/datasource.js
@@ -1,14 +1,36 @@
 const Router = require("@koa/router")
 const datasourceController = require("../controllers/datasource")
 const authorized = require("../../middleware/authorized")
+const joiValidator = require("../../middleware/joi-validator")
 const {
   BUILDER,
   PermissionLevels,
   PermissionTypes,
 } = require("@budibase/auth/permissions")
+const Joi = require("joi")
+const { FieldTypes } = require("../../constants")
 
 const router = Router()
 
+function generatePlusDatasourceSchema() {
+  // prettier-ignore
+  return joiValidator.body(Joi.object({
+    _id: Joi.string(),
+    _rev: Joi.string(),
+    source: Joi.string().valid("postgres"),
+    type: Joi.string().valid("datasource_plus"),
+    relationships: Joi.array().required().items(Joi.object({
+      from: Joi.string().required(),
+      to: Joi.string().required(),
+      cardinality: Joi.valid("1:N", "1:1", "N:N").required()
+    })),
+    entities: Joi.array().required().items(Joi.object({
+      type: Joi.string().valid(...Object.values(FieldTypes)).required(),
+      name: Joi.string().required(),
+    })),
+  }).unknown(true))
+}
+
 router
   .get("/api/datasources", authorized(BUILDER), datasourceController.fetch)
   .get(
@@ -16,7 +38,11 @@ router
     authorized(PermissionTypes.TABLE, PermissionLevels.READ),
     datasourceController.find
   )
-  .post("/api/datasources/plus", datasourceController.plus)
+  .post(
+    "/api/datasources/plus",
+    generatePlusDatasourceSchema(),
+    datasourceController.plus
+  )
   .post("/api/datasources", authorized(BUILDER), datasourceController.save)
   .delete(
     "/api/datasources/:datasourceId/:revId",
diff --git a/packages/server/src/db/utils.js b/packages/server/src/db/utils.js
index 29617a7dff..43a6056b9f 100644
--- a/packages/server/src/db/utils.js
+++ b/packages/server/src/db/utils.js
@@ -38,6 +38,7 @@ const DocumentTypes = {
   LAYOUT: "layout",
   SCREEN: "screen",
   DATASOURCE: "datasource",
+  DATASOURCE_PLUS: "datasource_plus",
   QUERY: "query",
 }
 
@@ -280,8 +281,10 @@ exports.getWebhookParams = (webhookId = null, otherProps = {}) => {
  * Generates a new datasource ID.
  * @returns {string} The new datasource ID which the webhook doc can be stored under.
  */
-exports.generateDatasourceID = () => {
-  return `${DocumentTypes.DATASOURCE}${SEPARATOR}${newid()}`
+exports.generateDatasourceID = ({ plus = false }) => {
+  return `${
+    plus ? DocumentTypes.DATASOURCE_PLUS : DocumentTypes.DATASOURCE
+  }${SEPARATOR}${newid()}`
 }
 
 /**