(MVCC) An advanced technique for improving multi-user database performance.
The main difference between multiversion and lock models is that in MVCC locks acquired for querying (reading) data don’t conflict with locks acquired for writing data and so reading never blocks writing and writing never blocks reading.
This technique is used in the free software database PostgreSQL.
[muhl-ti-vurs] /ˈmʌl tɪˌvɜrs/ noun 1. (in physics and cosmology) a hypothetical collection of identical or diverse universes, including our own. /ˈmʌltɪˌvɜːs/ noun 1. (astronomy) the aggregate of all existing matter, of which the universe is but a tiny fragment n. 1895, William James’s coinage, an alternative to universe meant to convey absence of order and […]
[muhl-ti-vur-si-tee] /ˌmʌl tɪˈvɜr sɪ ti/ noun, plural multiversities. 1. a with several campuses, each of which has many schools, divisions, etc. /ˌmʌltɪˈvɜːsɪtɪ/ noun 1. (mainly US & Canadian) a university with many constituent and affiliated institutions
/ˌmʌltɪvaɪˈbreɪtə/ noun 1. an electronic oscillator consisting of two transistors or other electronic devices, coupled so that the input of each is derived from the output of the other
[vyoo] /vyu/ noun 1. an instance of seeing or beholding; visual inspection. 2. sight; vision. 3. range of sight or vision: Several running deer came into the view of the hunters. 4. a sight or prospect of a landscape, the sea, etc.: His apartment affords a view of the park. 5. a picture or photograph […]