Читать книгу Data Lakes For Dummies - Alan R. Simon - Страница 26

The silver zone consists of data that has been error-checked and cleansed but still remains in its original format. Data may be copied from a source application in JavaScript Object Notation (JSON) format and land in the bronze zone in raw form, looking exactly as the data was in the source system itself — errors and all.

You’ll patch up any known errors, handle missing data, and otherwise cleanse the data. Then you’ll store the cleansed data in the silver zone, still in JSON format.

Not all data from your bronze zone will be cleansed and copied into your silver zone. The data lake model calls for loading massive amounts of data into the bronze zone without having to do upfront analysis to determine which data is definitely or likely needed for analysis. When you decide what data you need, you do the necessary data cleansing and move only the cleansed data into the silver zone.