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The DataWareHouse is a PostgreSQL database where the Moodle data is saved after it has been transformed by NiFi pipelines. It contains very few tables, compared to Moodle original database, but it can easily generate views with critical data, which is used in the different dashboards.

PostgreSQL Installation

1. Download PostgreSQL Docker image.

   Code Block
   docker pull postgres

2. Create the container. Replace <password> with the actual password.

   Code Block
   docker run --name datawarehouse -p 127.0.0.1:5432:5433/tcp -e POSTGRES_PASSWORD=<password> -d postgres

• docker run --name datawarehouse -p 127.0.0.1:5432:5433/tcp -e POSTGRES_PASSWORD=<password> -d postgres

• docker exec -ti <container ID> bash

• psql -h localhost -p 5432 -U postgres -d postgres

• ALTER USER postgres WITH PASSWORD '<password>';

• CREATE DATABASE zwe_analytics;

DataWareHouse Creation

1. Enter the PostgreSQL Docker. First, get the container ID.

   Code Block
   docker ps docker exec -ti <container ID> bash

2. Use psql to access the postgres database.

   Code Block
   psql -h localhost -p 5432 -U postgres -d postgres

3. Change the postgres user password and create the new database.

   Code Block
   ALTER USER postgres WITH PASSWORD '<password>'; CREATE DATABASE zwe_analytics;

4. Create the tables…