Let’s say we have a Nullable DateTime named StartTime [DisplayFormat(DataFormatString = “{0:dd.MM.yyyy}”)] public Nullable<System.DateTime> StartTime { get; set; }
Day: March 31, 2020
Unique Constraints in MS SQL Server to prevent duplications
The UNIQUE constraint ensures that all values in a column are different. Both the UNIQUE and PRIMARY KEY constraints provide a guarantee for uniqueness for a column or set of columns. A PRIMARY KEY constraint automatically has a UNIQUE constraint. However, you can have many UNIQUE constraints per table, but only one PRIMARY KEY constraint […]