1. Blocking is an unavoidable and by-design characteristic of any relational database management system (RDBMS) with lock-based concurrency

2. A query plan (or query execution plan) is an ordered set of steps used to access data in a SQL relational database management system.

3. Aerospace and defense firm Lockheed Martin migrated its SAP HANA relational database management system, which stores and retrieves SAP application data, to the cloud.