CIW v5 E-Commerce Designer
CIW v5 Founfations Exam
Internet Business Associate
CIW v5 Security Essentials
CIW JavaScript Fundamentals exam
CIW Web Foundations Associate
Site Development Associate
Network Technology Associate
CIW PERL FUNDAMENTALS
CIW v5 Site Designer
A theta-join can be viewed as:
The intersection oftwo relations
ACartesian product of two relations
Arestricted Cartesian product of two relations
The Cartesian product oftwo union-compatible relations
Which statement best describes a candidate key?
It is the primary key for an entity.
It uniquely identifies every instance of an entity.
One or more keys are joined together to form a composite key.
One or more keys may be used to form a primary key.
Which statement best describes a procedural data manipulation language command?
It contains a query language for retrieving data.
It can be used only to manipulate data through a SQL interface.
The user is not required to know how the underlying data structures are implemented.
It requires that the user know how the underlying data structures are implemented.