The DEFAULT constraint is used to provide a column’s default value. If no alternative value is supplied, that is, if the user leaves the column
Tag: Integrity Constraints in SQL Server
Entity Integrity Constraints
Entity integrity makes sure that there aren’t any duplicate records in the database and that each record’s identifying field is distinct and never null. The
Referential Integrity Constraints
A foreign key must match a primary key or be null in order to maintain referential integrity. In other words, every column in a base
Domain Integrity in SQL Server
Domain integrity assures that every data in a field contains legitimate values, is established by the permitted values of an attribute. Data types such as
SQL Server – GETDATE(), CURRENT_TIMESTAMP in DEFAULT statements
Most of the transactional tables generally do require to have a column with DEFAULT value as current date time to identify when the transaction had
Big Data & SQL 