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What is the difference between OLAP and OLTP and what is data warehouse?

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What is the difference between OLAP and OLTP and what is data warehouse?
OLAP is usually called a data warehouse. However, data warehouses are only part of OLAP, not all.
OLTP has more indexes than OLAP, and has high requirements on real-time performance, with many updates and modifications.
OLAP usually queries and analyzes data that is rarely modified or updated.
OLTP needs to observe three major paradigms to reflect data changes in real time and try to redundant data. OLAP does not need this. The tables in OLAP can be very large. Unlike OLTP, in order to abide by the three major paradigms, the tables are relatively small.
OLTP = online transaction processing (OLTP)
OLAP = Online Analytical Processing (OLAP)

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