Data warehousing techniques pdf

  • Which techniques are to be used in designing of data warehouse?

    There are 2 approaches for constructing data-warehouse: Top-down approach and Bottom-up approach are explained as below.
    External source is a source from where data is collected irrespective of the type of data.
    Data can be structured, semi structured and unstructured as well..

We can classify the data mining system according to kind of techniques used. We can describes these techniques according to degree of user interaction involved 

What are the limitations of traditional data warehouses?

Because financial data is sometimes real-time data, it is constantly generated, resulting in a massive amount of financial data produced in a short period of time

The volume, diversity, and velocity of Big Financial Data are highlighting the significant limitations of traditional Data Warehouses (DWs)

What determines the technology utilised by a data warehouse?

housed by a data warehouse

The latter is probably the biggest factor that determines the technology utilised by the data warehouse to manage and store the information

The volume of data affects the warehouse in two aspects: the overall size and ability to load

What is data warehousing?

Data warehousing: The process of constructing and using data warehouses

2 2

Data Warehouse—Subject-Oriented Organized around major subjects, such as customer, product, sales

Focusing on the modeling and analysis of data for decision makers, not on daily operations or transaction processing


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