The logical data warehouse works by intelligently marrying two distinct technologies to create an entirely new manner of integrating data. The ﬁrst technology is data federation, which connects two or more disparate databases and makes them all
appear as if they were a single database. The second is analytical database management, which provides semantic business-friendly data element naming and modeling, thereby enabling ﬂexible ingestion and modeling options.
The Functionality of a Logical Data Warehouse
The results are profound. Data federation alone oﬀers ﬂexibility but can’t scale. Analytical database management scales beautifully but is inﬂexible. The combination of the two enables breakaway ﬂexibility and performance and represents an entirely new paradigm in the way we think, manage, and work with data.
For example, a logical data warehouse can connect to a variety of data sources simultaneously, including classic relational databases like Oracle and MS-SQL; NoSQL databases like MongoDB or Hadoop; column stores like Vertica or SAP HANA; or web services like Google Analytics, AdWords, Facebook, Twitter, and others. Once these have been connected, the resulting integrated and overarching view of the data appears within a data analysis tool as if everything was contained in a single SQL database, accessible with a common query language. Virtually any data analysis tool currently on the market (such as Qlik, Tableau, Aqua Data, etc.) can connect, query, and analyze data via the virtual layer without the need to pull or copy data from any location.
Opportunities with a Logical Data Warehouse
This method oﬀers vast new opportunities and possibilities for data exploration, data discovery, rapid prototyping, and intuitive experimentation. Business users can get results instantly and can refactor data models just as quickly. Further, building logical data views as shareable components, including common KPIs and metrics, can ensure that every report, every visualization, and every query response conforms to the same corporate standards and deﬁnitions. Data Virtuality acts as a central hub connecting all systems and applications within the enterprise, enabling data exchange between systems, and ensuring that the latest data is available anywhere and anytime.