a collection of concepts to describe the structure of a database, the operations for manipulating these structures and certain constraints.
a set of concepts to describe the structure of a database, the operations for manipulating these structures, and certain constraints that the database should obey.
Drug developer Inspire Pharmaceuticals Inc . ( nasdaq : ISPH - news - people ) tumbled $ 2.17 , or 13.4 percent , to $ 13.98 .