First we want to create the database schema. Only a single table is needed for this application and we only want to support SQLite so creating the database schema is quite easy. Just put the following contents into a file named schema.sql in the just created flaskr folder:
drop table if exists entries;
create table entries (
id integer primary key autoincrement,
title text not null,
text text not null
);
This schema consists of a single table called entries and each row in this table has an id, a title and a text. The id is an automatically incrementing integer and a primary key, the other two are strings that must not be null.
Continue with Step 2: Application Setup Code.