MySQL schema example

Author: IgorSkobelev

schema_example/mysql_ddl.sql

@@ -0,0 +1,110 @@
+-- Example of schema 
+-- The schema does not include any indexes ( except PK's )
+
+-- Users
+CREATE TABLE users (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	account_id INTEGER,
+	reputation INTEGER NOT NULL,
+	views INTEGER DEFAULT 0,
+	down_votes INTEGER DEFAULT 0,
+	up_votes INTEGER DEFAULT 0,
+	display_name VARCHAR(255) NOT NULL,
+	location VARCHAR(512),
+	profile_image_url VARCHAR(255),
+	website_url VARCHAR(255),
+	about_me TEXT,
+	creation_date TIMESTAMP(3) NOT NULL,
+	last_access_date TIMESTAMP(3) NOT NULL
+);
+
+-- Posts
+CREATE TABLE posts (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	owner_user_id INTEGER,
+	last_editor_user_id INTEGER,
+	post_type_id SMALLINT NOT NULL,
+	accepted_answer_id INTEGER,
+	score INTEGER NOT NULL,
+	parent_id INTEGER,
+	view_count INTEGER,
+	answer_count INTEGER DEFAULT 0,
+	comment_count INTEGER DEFAULT 0,
+	owner_display_name VARCHAR(64),
+	last_editor_display_name VARCHAR(64),
+	title VARCHAR(512),
+	tags VARCHAR(512),
+	content_license VARCHAR(64) NOT NULL,
+	body TEXT,
+	favorite_count INTEGER,
+	creation_date TIMESTAMP(3) NOT NULL,
+	community_owned_date TIMESTAMP(3),
+	closed_date TIMESTAMP(3),
+	last_edit_date TIMESTAMP(3),
+	last_activity_date TIMESTAMP(3),
+    
+);
+
+-- PostLinks
+CREATE TABLE post_links (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	related_post_id INTEGER NOT NULL,
+	post_id INTEGER NOT NULL,
+	link_type_id TINYINT NOT NULL,
+	creation_date TIMESTAMP(3) NOT NULL
+);
+
+-- PostHistory
+CREATE TABLE post_history (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	post_id INTEGER NOT NULL,
+	user_id INTEGER,
+	post_history_type_id TINYINT NOT NULL,
+	user_display_name VARCHAR(64),
+	content_license VARCHAR(64),
+	revision_guid uuid,
+	text TEXT,
+	comment TEXT,
+	creation_date TIMESTAMP(3) NOT NULL
+);
+
+-- Comments
+CREATE TABLE comments (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	post_id INTEGER NOT NULL,
+	user_id INTEGER,
+	score TINYINT NOT NULL,
+	content_license VARCHAR(64) NOT NULL,
+	user_display_name VARCHAR(64),
+	text TEXT,
+	creation_date TIMESTAMP(3) NOT NULL
+);
+
+-- Votes
+CREATE TABLE votes (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	user_id INTEGER,
+	post_id INTEGER NOT NULL,
+	vote_type_id TINYINT NOT NULL,
+	bounty_amount TINYINT,
+	creation_date TIMESTAMP(3) NOT NULL
+);
+
+-- Badges
+CREATE TABLE badges (
+	id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	user_id INTEGER NOT NULL,
+	class TINYINT NOT NULL,
+	name VARCHAR(64) NOT NULL,
+	tag_based TINYINT(1) NOT NULL,
+	date TIMESTAMP(3) NOT NULL
+);
+
+-- Tags
+CREATE TABLE tags (
+	id INTEGER NOT NULL AUTO_INCREMENT PRIMARY KEY,
+	excerpt_post_id INTEGER,
+	wiki_post_id INTEGER,
+	tag_name VARCHAR(255) NOT NULL,
+	count INTEGER DEFAULT 0
+);

schema_example/postgresql_ddl.sql

@@ -1,5 +1,5 @@
 -- Example of schema 
--- Schema does not include any kind of indexes
+-- The schema does not include any indexes ( except PK's )
 
 -- Users
 CREATE TABLE users (
@@ -96,7 +96,7 @@ CREATE TABLE badges (
 	class SMALLINT NOT NULL,
 	name VARCHAR(64) NOT NULL,
 	tag_based BOOL NOT NULL,
-	date timestamp NOT NULL
+	date TIMESTAMP NOT NULL
 );
 
 -- Tags