Data warehouse schema ppt

  • What is a data warehouse schema?

    Data warehouse schema is a description, represented by objects such as tables and indexes, of how data relates logically within a data warehouse.
    Star, galaxy, and snowflake schema are types of warehouse schema that describe different logical arrangements of data..

  • What is schema in data warehouse?

    Data warehouse schema is a description, represented by objects such as tables and indexes, of how data relates logically within a data warehouse.
    Star, galaxy, and snowflake schema are types of warehouse schema that describe different logical arrangements of data..

  • What is the difference between database and data warehouse schema?

    A database stores the current data required to power an application whereas a data warehouse stores current and historical data for one or more systems in a predefined and fixed schema for the purpose of analyzing the data..

  • What is the scheme of the data warehouse?

    The Data Warehouse Schema is a structure that rationally defines the contents of the Data Warehouse, by facilitating the operations performed on the Data Warehouse and the maintenance activities of the Data Warehouse system, which usually includes the detailed description of the databases, tables, views, indexes, and .

  • A data warehouse stores data in a structured format.
    It is a central repository of preprocessed data for analytics and business intelligence.
    A data mart is a data warehouse that serves the needs of a specific business unit, like a company's finance, marketing, or sales department.

What is the difference between a database and a data warehouse?

It gives us a brief idea about the link between different database tables through keys and values

A data warehouse also has a schema like that of a database

In database modeling, we use the relational model schema

Whereas in the data warehouse, we use modeling Star, Snowflake, and Galaxy schema

Do you think you can derive insights from raw data? It’s possible, of course

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