DWH is a process of building a data warehouse 1) Requirement gathering It is done by business analysts, Onsite technical lead and client In this phase a…
Slowly Changing Dimensions (SCD’s) SCD is a dimension which captures the changes that occur over a period of time. Type I – Contains only current data. Chan…
Confirmed Dimension: Dimensions maintaining relationship with more than one fact table are called as confirmed dimensions Shipment (Fact Table) …
1) Addictive Type: Measurements in a fact table that can be summed up across all dimensions Consider the following retail fact table: Store wise sales Pro…
Tables in DWH Dimensions: Dimensions are attributes about facts. They store textual description about business. Dimensions are denormalized due to one to …
Data Acquisition: In DWH terminology, Extraction, Transformation, Loading (ETL) is called as Data Acquisition It is a process of extracting relevant business …
Datamart The difference between a datamart and a warehouse is their scope: A data mart only seeks to serve the needs of a portion of the company, such as the…
Differences between OLTP and DWH Problems in existing systems: Data is scattered around multiple operational systems Inconsistency of the data across mul…
Definition of Data Warehousing Data Warehousing is a relational database which is used to store large volumes of data for analyzing business but not for busine…
If you're looking for Data Warehouse Interview Questions & Answers for Experienced or Freshers, you are at right place. There are lot of opportunities from many…
DWH is a process of building a data warehouse 1) Requirement gathering It is done by business analysts, Onsite technical lead and client In this phase a…
Slowly Changing Dimensions (SCD’s) SCD is a dimension which captures the changes that occur over a period of time. Type I – Contains only current data. Chan…
Confirmed Dimension: Dimensions maintaining relationship with more than one fact table are called as confirmed dimensions Shipment (Fact Table) …
1) Addictive Type: Measurements in a fact table that can be summed up across all dimensions Consider the following retail fact table: Store wise sales Pro…
Tables in DWH Dimensions: Dimensions are attributes about facts. They store textual description about business. Dimensions are denormalized due to one to …
Data Acquisition: In DWH terminology, Extraction, Transformation, Loading (ETL) is called as Data Acquisition It is a process of extracting relevant business …
Datamart The difference between a datamart and a warehouse is their scope: A data mart only seeks to serve the needs of a portion of the company, such as the…
Differences between OLTP and DWH Problems in existing systems: Data is scattered around multiple operational systems Inconsistency of the data across mul…
Definition of Data Warehousing Data Warehousing is a relational database which is used to store large volumes of data for analyzing business but not for busine…
If you're looking for Data Warehouse Interview Questions & Answers for Experienced or Freshers, you are at right place. There are lot of opportunities from many…