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.
Constraints. Another valuable generic constraint is the ability to restrict type parameters to a value type or a reference type. The compiler does not allow specifying. as the base class in a constraint. Instead, C# provides special syntax that works for reference types as well.