text: CREATE TABLE IF NOT EXISTS users (
    userId serial PRIMARY KEY,
    username varchar(50) UNIQUE,
    email varchar(80) UNIQUE,
    password varchar(400),
    sex varchar(10),
    firstname varchar(50),
    lastname varchar(50), 
    timeRegistered TIMESTAMP NOT NULL DEFAULT NOW()
  
  CREATE TABLE IF NOT EXISTS entries (
    entriesId serial PRIMARY KEY,
    entryTitle varchar(50) NOT NULL,
    entry varchar(1000) NOT NULL,
    userId serial REFERENCES users(userId),
    visibility varchar(10) NOT NULL,
    timeCreated TIMESTAMP NOT NULL DEFAULT NOW(),
    timeModified TIMESTAMP
  )
  CREATE TABLE IF NOT EXISTS reminders (
    reminderId serial PRIMARY KEY,
    userId serial REFERENCES users(userId),
    reminderTime TIMESTAMP 
  )