FUNDAMENTALS OF COMPUTER

Detailed explanation-1: -A good alternative to the star schema is? Answer-B) Fact constellation is a good alternative to the star schema.

Detailed explanation-2: -The fact constellation schema consists of more than one star schema at a time. Unlike the star schema, it is not easy to operate, as it has more joins between the tables. Unlike the Star schema, fact constellation schema uses heavily complex queries to access data from the database.

Detailed explanation-3: -Fact constellation is a measure of online analytical processing, which is a collection of multiple fact tables sharing dimension tables, viewed as a collection of stars. It can be seen as an extension of the star schema. A fact constellation schema has multiple fact tables. It is also known as galaxy schema.

Detailed explanation-4: -The Galaxy Data Warehouse Schema, also known as a Fact Constellation Schema, acts as the next iteration of the data warehouse schema. Unlike the Star Schema and Snowflake Schema, the Galaxy Schema uses multiple fact tables connected with shared normalized dimension tables.

Detailed explanation-5: -In computing, the star schema is the simplest style of data mart schema and is the approach most widely used to develop data warehouses and dimensional data marts. The star schema consists of one or more fact tables referencing any number of dimension tables.