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Table 4 Response times in seconds of the six queries performed on eXist NoSQL database

From: Examining database persistence of ISO/EN 13606 standardized electronic health record extracts: relational vs. NoSQL approaches

eXist

5000

10,000

20,000

slope (*10 −6 )

Q1

0.6608

3.7834

7.3022

442.76

Q2

60.7761

129.3645

287.362

15,105.73

Q3

0.6976

1.7710

4.1172

227.96

Q4

0.6445

3.7604

7.3216

445.17

Q5

145.3373

291.2502

597.7216

30,158.93

Q6

68.3798

138.9987

475.2663

27,125.82

Database size

1.25GB

2.54GB

5.12GB

 

Total extracts

5000

10,000

20,000

 
  1. *stands for the multiplication sign