Data Vault data warehouse

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Developers may encounter a new round of problems: unexpected changes in field formats, renaming of entities, or complex application accounting logic. Raw data enters a database managed by PostgreSQL. We deployed the database on Samolet’s own servers. The data warehouse is built on the DataVault principle - in simple words, this means that all business entities are stored in separate tables and connected using unique keys.
  
The “Hub” table contains business keys by which we can uniquely Brazil Telemarketing Data distinguish elements within one entity - for example, for Internet users such a unique key will be the client id in the Metrica counter. The “Satellite” table contains descriptive characteristics of the entity - for example, the type of device or the city from which the user visited the LCD website. This structure allows you to manage the data storage very flexibly, adding or deleting unnecessary fields - the structure of the “Hub” table does not change and the data is not lost.



The end-to-end analytics system combines the  and reports in the BI system. User Stories Adventum The end result of setting up data sources and storage is a table with user stories. Each such story consists of many lines with data describing all the client’s interactions with the company - from visiting the site to making a purchase. For this story to come together, data sources must contain keys (not to be confused with business keys in a data warehouse.