diff --git a/.prettierrc b/.prettierrc
new file mode 100644
index 0000000..cce9d3c
--- /dev/null
+++ b/.prettierrc
@@ -0,0 +1,3 @@
+{
+  "semi": false
+}
diff --git a/server/database-docs.md b/server/database-docs.md
new file mode 100644
index 0000000..9a7e610
--- /dev/null
+++ b/server/database-docs.md
@@ -0,0 +1,64 @@
+# User
+
+```ts
+type User = {
+  id: uuid
+  name: string
+  email: string
+  password: string
+}
+```
+
+# UserAccount
+
+```ts
+type UserAcccount = {
+  user_id: uuid
+  account_id: uuid
+}
+```
+
+- join table between User <-> Account.
+- use case: account belongs to more than 1 person
+
+# Account
+
+```ts
+type Account = {
+  id: uuid
+  name: string // example: Household Expenses
+  details: string
+  income: integer // cents // total income
+  expenses: integer // cents // total expenses
+}
+```
+
+- belongs to User
+- has many transactions
+
+# Stack
+
+- belongs to account
+
+```ts
+type Stack = {
+  id: uuid
+  account_id: uuid
+  name: string
+  details: string
+  amount: integer
+}
+```
+
+# Transaction
+
+- belongs to Stack
+
+```ts
+type Transaction = {
+  id: uuid
+  stack_id: string
+  amount: integer // cents
+  details: string
+}
+```