A data warehouse is a storage of historical data that allows analysts what does a venture capitalist look for in a start up to compare information from a variety of sources to get actionable insights. A data warehouse can be installed on the premises or in a cloud. The decision you make will depend on your specific business requirements and other factors like capacity and cost, as well as control, security and resources.
Data warehouses are used to store large amounts of historical data from a company and conduct in-depth analysis to support business intelligence or reporting (BI). They can store relational and nonrelational data. They are usually structured, meaning that the data is extracted and loaded after which it is transformed to predefined schemas, before being stored. This makes it simpler to run queries against them instead of directly against operational source system.
Traditional data warehouses on premises need expensive hardware and software in order to host them. They are limited in storage to computing power and must continually discard old data to make space for newer data. A data warehouse allows you to run queries on historical data that are impossible in operational systems, since they only refresh with real-time data.
A cloud-based data store, or managed service is an entirely automated and extremely efficient solution. It is ideal for businesses that need to analyze large amounts of data over the long term. It is often a more affordable alternative to on-premise data warehouses, as it eliminates the need to use oversized servers and offers flexible pricing. You can pay per the hour or throughput, or the amount of resources you are allocated.