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.
Dictionary entry overview: What does constraint mean? â¢ CONSTRAINT (noun) The noun CONSTRAINT has 3 senses: 1. the state of being physically constrained 2. a device that retards something's motion 3. the act of constraining; the threat or use of force to control the thoughts or behavior of others Familiarity information: CONSTRAINT used as a noun is uncommon.