Source: Stackoverflow.com -- http://stackoverflow.com/questions/21462581/what-is-the-difference-between-full-para-and-hardware-assisted-virtualiazation
Tuesday, June 30, 2015
Source: Wikipedia -- https://en.wikipedia.org/wiki/In-memory_database
An in-memory database (IMDB; also main memory database system or MMDB or memory resident database) is a database management system that primarily relies on main memory for computer data storage. It is contrasted with database management systems that employ a disk storage mechanism. Main memory databases are faster than disk-optimized databases since the internal optimization algorithms are simpler and execute fewer CPU instructions. Accessing data in memory eliminates seek time when querying the data, which provides faster and more predictable performance than disk.
Applications where response time is critical, such as those running telecommunications network equipment and mobile advertising networks, often use main-memory databases. IMDBs have gained a lot of traction, especially in the data analytics space, starting in the mid-2000s - mainly due to cheaper RAM.