What is fact table in Informatica?

A fact table is a primary table in a dimensional model. A Fact Table contains. Measurements/facts. Foreign key to dimension table.

What is fact table with example?

A fact table is found at the center of a star schema or snowflake schema surrounded by dimension tables. A fact table consists of facts of a particular business process e.g., sales revenue by month by product. Facts are also known as measurements or metrics. A fact table record captures a measurement or a metric.

What type of data is stored in fact tables?

A fact table stores quantitative information for analysis and is often denormalized. A fact table works with dimension tables and it holds the data to be analyzed and a dimension table stores data about the ways in which the data can be analyzed. Thus, a fact table consists of two types of columns.

Are fact tables normalized or denormalized?

Fact tables are completely normalized To get the textual information about a transaction (each record in the fact table), you have to join the fact table with the dimension table. Some say that fact table is in denormalized structure as it might contain the duplicate foreign keys.

What is the advantage of fact table?

Advantages of Fact Table. It contains quantitative information for analysis. It containing performance metrics are usually normalized. It can contain different measures like additive, semi-additive and non-additive.

What does a fact table contains?

Fact tables contain the content of the data warehouse and store different types of measures like additive, non additive, and semi additive measures. Fact tables provide the (usually) additive values that act as independent variables by which dimensional attributes are analyzed.

What does a fact table contain?

What is the difference between factfact table and dimension table?

Fact Table contains a concatenated key while the dimension table contains a primary key. Dimension tables must be created before the fact table is created. Any schema contains more dimension tables and less fact tables.

What is factfact table in SQL?

Fact tables mostly have two columns, one for foreign keys that helps to join them with a dimension table and others that contains the value or data that need to be analyzed. It mostly contains numeric data. It grows vertically and it contains more records and fewer attributes.

What is a fact table in data warehouse design?

Summary: in this tutorial, we will discuss fact table, fact table types and four steps of designing a fact table in dimensional data model described by Kimball. A fact table is used in the dimensional model in data warehouse design. A fact table is found at the center of a star schema or snowflake schema surrounded by dimension tables.