Star and SnowFlake Schema in Data Warehouse скачать в хорошем качестве

Star and SnowFlake Schema in Data Warehouse

What is a Star Schema? In the STAR Schema, the center of the star can have one fact table and a number of associated dimension tables. It is known as star schema as its structure resembles a star. The star schema is the simplest type of Data Warehouse schema. It is also known as Star Join Schema and is optimized for querying large data sets. What is a Snowflake Schema? SNOWFLAKE SCHEMA is a logical arrangement of tables in a multidimensional database such that the ER diagram resembles a snowflake shape. A Snowflake Schema is an extension of a Star Schema, and it adds additional dimensions. The dimension tables are normalized which splits data into additional tables. If you’ve enjoyed this video. Like and Subscribe to my channel for more similar informatica interview videos and tutorials. Got any questions about informatica interview? Ask me in the comment section below. ------------------------------ Why should you watch my channel? Informatica is the market leader in the ETL segment. I am working as senior ETL developer for 10+ years in North Carolina, USA and want to help and share realtime and scenario based tutorial to prepare for interview. Who should watch this video? If you are fresher or already working but looking to refresh SQL, Informatica, ETL, Data warehousing concepts for interview. For more Information: Please visit my other platforms. Website: www.informaticainterview.com LinkedIn: www.linkedin.com/in/informatica-interview-prep Or contact me by email: informaticainterviewhelp@gmail.com