CREATE TABLE IF NOT EXISTS users (user_id VARCHAR(255) PRIMARY KEY NOT NULL,username VARCHAR(255) UNIQUE NOT NULL,email VARCHAR(255) UNIQUE NOT NULL,password TEXT NOT NULL);
CREATE TABLE IF NOT EXISTS files (id VARCHAR(255) PRIMARY KEY NOT NULL,owner_id VARCHAR(255) NOT NULL,name TEXT NOT NULL,size BIGINT NOT NULL,downloaded BIGINT NOT NULL,uploaded_byte BIGINT NOT NULL DEFAULT 0, uploaded_chunk BIGINT NOT NULL DEFAULT -1,done BOOLEAN NOT NULL DEFAULT FALSE,FOREIGN KEY (owner_id) REFERENCES users(user_id));