diff --git a/.gitignore b/.gitignore
index 9f1eb09..44c0c11 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,4 @@
 logs/
 nginx.conf.compiled
+db.*.sqlite
+.vscode/
diff --git a/schema.lua b/schema.lua
new file mode 100644
index 0000000..2f50821
--- /dev/null
+++ b/schema.lua
@@ -0,0 +1,48 @@
+local schema = require("lapis.db.schema")
+local db = require("lapis.db")
+
+local types = schema.types
+
+schema.create_table("users", {
+  {"id", types.integer{primary_key = true}},
+  {"username", types.text{unique = true, null = false}},
+  {"password_hash", types.text{null = false}},
+  {"permission", types.integer{default = 0}},
+  {"created_at", "INTEGER DEFAULT (unixepoch(CURRENT_TIMESTAMP))"}
+})
+
+schema.create_table("topics", {
+  {"id", types.integer{primary_key = true}},
+  {"name", types.text{null = false}},
+  {"slug", types.text{null = false, unique = true}}
+})
+
+schema.create_table("threads", {
+  {"id", types.integer{primary_key = true}},
+  {"topic_id", "INTEGER REFERENCES topics(id) ON DELETE CASCADE"},
+  {"user_id", "INTEGER REFERENCES users(id) ON DELETE SET NULL"},
+  {"title", types.text{null = false}},
+  {"slug", types.text{null = false, unique = true}},
+  {"created_at", "INTEGER DEFAULT (unixepoch(CURRENT_TIMESTAMP))"},
+})
+
+schema.create_table("posts", {
+  {"id", types.integer{primary_key = true}},
+  {"thread_id", "INTEGER REFERENCES threads(id) ON DELETE CASCADE"},
+  {"user_id", "INTEGER REFERENCES users(id) ON DELETE SET NULL"},
+  {"created_at", "INTEGER DEFAULT (unixepoch(CURRENT_TIMESTAMP))"},
+  {"current_revision_id", "INTEGER REFERENCES post_history(id)"},
+})
+
+schema.create_table("post_history", {
+  {"id", types.integer{primary_key = true}},
+  {"post_id", "INTEGER REFERENCES posts(id) ON DELETE CASCADE"},
+  {"user_id", "INTEGER REFERENCES users(id) ON DELETE CASCADE"},
+  {"content", types.text{null = false}},
+  {"edited_at", "INTEGER DEFAULT (unixepoch(CURRENT_TIMESTAMP))"},
+  {"is_initial_revision", "BOOLEAN DEFAULT FALSE"}
+})
+
+db.query("CREATE INDEX idx_threads_topic_id ON threads(topic_id)")
+db.query("CREATE INDEX idx_posts_thread_id ON posts(thread_id)")
+db.query("CREATE INDEX idx_post_history_post_id ON post_history(post_id)")