Module 1: Basics and Background
Lecture 2: Advanced Database Queries
Example of skyline query
Object
Dim1
Dim2
O
1
7
3
O
2
2
2
O
3
8
5
O
4
9
2
O
5
4
1
O
6
3
4
Object
Dim1
Dim2
Dominated by
O
1
7
3
O
6
O
2
2
2
-
O
3
8
5
-
O
4
9
2
O
1
,O
2
,O
3
,O
6
O
5
4
1
O
2
,O
6
O
6
3
4
-
Dominating functions are
for dimension 1 and
for dimension 2.
Skyline query answer:
for dimension 1 and 
for dimension 2.
