What is a primary key?
What will be an ideal response?
Primary key is a column (or a set of columns) whose value is unique for each row. Primary keys cannot have null values. If there are multiple columns (or sets of columns) that have unique values in each row, one of them is designated as a primary key. Each relation must have a primary key.
Business
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A widely used mathematical programming technique designed to help managers and decision making relative to resource allocation is called
A) linear programming. B) computer programming. C) constraint programming. D) goal programming. E) None of the above
Business
List the top five security breaches in 2014
What will be an ideal response?
Business