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Preference-Based Search
Database Size
Small
~500
Medium
~1'000
Large
~5'000
Super Large
~50'000
Skyline Algorithm
Native SQL
Block Nested Loops
Block Nested Loops
with Presort
Sampling
with Block Nested Loops
Preferences
Price
Low
High
Around 10'000
Color
Red > all others equal
Red > all others
Pink > {Red, Black} > Beige > all others
Body
Van > Compact Car > all others
Van > Compact Car > all others equal
Compact Car > Van > Station Wagon > Scooter > all others > Pick Up
Results
3
Query Execution Time:
46.856 ms
ID
Name
Price
Color
Body
10325
FORD KA 1.6 Sportka
Fr. 5 950.00
red
compact car
23642
OPEL Vectra 2.2i 16V Comfort
Fr. 4 800.00
red
limousine
32085
CITROEN Saxo 1.4i Exclusive
Fr. 900.00
blue
compact car