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
,
and 
, return all objects 
such that
iff all the 
dimensions individually are the same,
dimensions as well