Breast cancer may cause swollen axillary lymph nodes since the lymph vessels of the breast drain into the lymph nodes of the armpit. These nodes become enlarged when cancer cells spread beyond the breast tissue.
Relational database. (Redirected from Database constraints) A relational database is a digital database whose organization is based on the relational model of data, as proposed by E. F. Codd in 1970. The various software systems used to maintain relational databases are known as a relational database management system (RDBMS).
Default Value or Binding. Displays the default for this column whenever no value is specified for this column. The value of this field can be either the value of a SQL Server default constraint or the name of a global constraint to which the column is bound.The drop-down list contains all global defaults defined in the database.To bind the column to a global default, select from the drop-down list.he value of this field can be either the value of a SQL Server default constraint or the name of a global constraint to which the column is bound. The drop-down list contains all global defaults defined in the database.