Difference between ETL and ELT ETL (Extract, Transform, and Load) Extract, Transform and Load is the technique of extracting the record from…
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operational database vs data warehouse
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ETL (Extract, Transform, and Load) Process What is ETL? The mechanism of extracting information from source systems and bringing it into the…
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Data Warehouse Modeling Data warehouse modeling is the process of designing the schemas of the detailed and summarized information of the data…
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OLAP Operations in the Multidimensional Data Model In the multidimensional model, the records are organized into various dimensions, and each dimension includes…
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What is Operational Data Stores? An ODS has been described by Inmon and Imhoff (1996) as a subject-oriented, integrated, volatile, current valued…
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Data Warehouse Process Architecture The process architecture defines an architecture in which the data from the data warehouse is processed for a…
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Difference between Star and Snowflake Schemas Star Schema In a star schema, the fact table will be at the center and is…
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Types of Database Parallelism Parallelism is used to support speedup, where queries are executed faster because more resources, such as processors and…
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Types of OLAP There are three main types of OLAP servers are as following: ROLAP stands for Relational OLAP, an application based…
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What is Data Cube? When data is grouped or combined in multidimensional matrices called Data Cubes. The data cube method has a…