The concept of a "data warehouse" has been around for a long time. A really, really long time. The term started being used in the 1970s, and has essentially retained the same meaning for its 50 years of existence, which is an eternity in the realm of computer science.
The data warehouse consists of two basic components:
The second component --- the database software --- has made tremendous progress over the past five decades. The current software is much faster, more fault tolerant, and more scalable than the original data warehousing software.