Cache and Raid performance. One of the key limitations of spinning disk hardware is the use of a physical reading armature and the time this takes to move across the surface of a diskâs platter to the required data blocks.
Constraints are part of a database schema definition. A constraint is usually associated with a table and is created with a CREATE CONSTRAINT or CREATE ASSERTION SQL statement. They define certain properties that data in a database must comply with.
English Collins Dictionary-English Definition & Thesaurus &nbsp. See also: practical joke, practical reason, practical joker, International Practical Temperature Scale. constraint. constraint. n. something that limits your freedom to do what you want. I wish I could live without constrains because I want to have more time to do what I want.