diff --git a/README.md b/README.md
index d52245d..c7fb4ac 100644
--- a/README.md
+++ b/README.md
@@ -141,3 +141,43 @@ Greenlock.create({
   ...
 });
 ```
+
+## Table Structure
+
+This is the table structure that's created.
+
+```sql
+CREATE TABLE `Keypairs` (
+  `id` INTEGER PRIMARY KEY AUTOINCREMENT,
+  `xid` VARCHAR(255) UNIQUE,
+  `content` TEXT,
+  `createdAt` DATETIME NOT NULL,
+  `updatedAt` DATETIME NOT NULL);
+
+CREATE TABLE `Domains` (
+  `id` INTEGER PRIMARY KEY AUTOINCREMENT,
+  `subject` VARCHAR(255) UNIQUE,
+  `altnames` TEXT,
+  `createdAt` DATETIME NOT NULL,
+  `updatedAt` DATETIME NOT NULL);
+
+CREATE TABLE `Certificates` (
+  `id` INTEGER PRIMARY KEY AUTOINCREMENT,
+  `subject` VARCHAR(255) UNIQUE,
+  `cert` TEXT,
+  `issuedAt` DATETIME,
+  `expiresAt` DATETIME,
+  `altnames` TEXT,
+  `chain` TEXT,
+  `createdAt` DATETIME NOT NULL,
+  `updatedAt` DATETIME NOT NULL);
+
+CREATE TABLE `Chains` (
+  `id` INTEGER PRIMARY KEY AUTOINCREMENT,
+  `xid` VARCHAR(255) UNIQUE,
+  `content` TEXT,
+  `createdAt` DATETIME NOT NULL,
+  `updatedAt` DATETIME NOT NULL,
+  `CertificateId` INTEGER REFERENCES
+  `Certificates` (`id`) ON DELETE SET NULL ON UPDATE CASCADE);
+```