Module 1: Basics and Background
  Lecture 1: Basic Database Queries
 

                                            



Exact match query or Point query

  • Point query: Given and , return all objects such that
 
  • The concept of equality (operator =) needs to be precisely defined
  For example, iff all the dimensions individually are the same,
  i.e.
  • Equality can be defined over a subset of the dimensions as well
  For example,