6.4.2 The purpose of data analysis tools and their use in buisness

What is a data warehouse?

a central collection of key data organised into a pre-defined format

What is data cleansing?

going through data, looking for errors, correcting them or excluding them

What are data lakes?

data stores that hold data in an unstructured way

compare data warehouses vs lakes?

• Format - lake = any , Warehouse = structured

• Speed - lake = stores fast process later, warehouse = process first

• cost - lake = cheaper, warehouse = expensive due to processing

what is data mining?

software used to find trends and patters in big data sources

What is Data reporting?

taking data and converting to information via consolidating, organising, formatting and summarising