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explain "ETL"

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Ed Chalstrey 2022-04-01 11:23:24 +01:00
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etl/README.md
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# Extract, transform and load
The scripts in this directory are used to extract, transform and load (ETL) the core datasets for Colouring London. This README acts as a guide for setting up the Colouring London database with these datasets and updating it.
# Contents # Contents
- :arrow_down: [Downloading Ordnance Survey data](#arrow_down-downloading-ordnance-survey-data) - :arrow_down: [Downloading Ordnance Survey data](#arrow_down-downloading-ordnance-survey-data)
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# :arrow_down: Downloading Ordnance Survey data # :arrow_down: Downloading Ordnance Survey data
The scripts in this directory are used to extract, transform and load (ETL) the core datasets The building geometries are sourced from Ordnance Survey (OS) MasterMap (Topography Layer). To get the required datasets, you'll need to complete the following steps:
for Colouring London:
Building geometries, sourced from Ordnance Survey (OS) MasterMap (Topography Layer)
To get the required datasets, you'll need to complete the following steps:
1. Sign up for the Ordnance Survey [Data Exploration License](https://www.ordnancesurvey.co.uk/business-government/licensing-agreements/data-exploration-sign-up). You should receive an e-mail with a link to log in to the platform (this could take up to a week). 1. Sign up for the Ordnance Survey [Data Exploration License](https://www.ordnancesurvey.co.uk/business-government/licensing-agreements/data-exploration-sign-up). You should receive an e-mail with a link to log in to the platform (this could take up to a week).
2. Navigate to https://orders.ordnancesurvey.co.uk/orders and click the button for: ✏️ Order. From here you should be able to click another button to add a product. 2. Navigate to https://orders.ordnancesurvey.co.uk/orders and click the button for: ✏️ Order. From here you should be able to click another button to add a product.