Public Dataset Schema Normality

Tracks public dataset schema consistency

Observations: 60
Tracking since: 06 Aug 2026
Last updated: 03 Sep 2026 08:45 UTC

Median Schema Complexity

The median number of columns/properties defined in the dataset schema

30 observations · measured in count

Summary Line Area Heatmap Table

20.5 count

wikidata

▬ 0.0% vs previous

03 Sep 2026 08:45

Median Schema Complexity (count) — summary, last 30 days.

Median Schema Complexity (count) — line, last 30 days.

Median Schema Complexity (count) — area, last 30 days.

	0						6						12						18
06 Aug
07 Aug
08 Aug
09 Aug
10 Aug
11 Aug
12 Aug
13 Aug
14 Aug
15 Aug
16 Aug
17 Aug
18 Aug
19 Aug
20 Aug
21 Aug
22 Aug
23 Aug
24 Aug
25 Aug
26 Aug
27 Aug
28 Aug
29 Aug
30 Aug
31 Aug
01 Sep
02 Sep
03 Sep

Darker = higher median schema complexity. Empty cells are hours with no collection.

Median Schema Complexity (count) — heatmap, last 30 days.

Median Schema Complexity observations
When	Median Schema Complexity
03 Sep 2026 08:45	20.5 count
02 Sep 2026 08:30	20.5 count
01 Sep 2026 08:15	20.5 count
31 Aug 2026 08:00	20.5 count
30 Aug 2026 07:45	20.5 count
29 Aug 2026 07:30	20.5 count
28 Aug 2026 07:15	20.5 count
27 Aug 2026 07:00	20.5 count
26 Aug 2026 06:45	20.5 count
25 Aug 2026 06:30	20.5 count
24 Aug 2026 06:15	20.5 count
23 Aug 2026 06:00	20.5 count
22 Aug 2026 05:45	20.5 count
21 Aug 2026 05:30	20.5 count
20 Aug 2026 05:15	20.5 count
19 Aug 2026 05:00	20.5 count
18 Aug 2026 04:45	20.5 count
17 Aug 2026 04:30	20.5 count
16 Aug 2026 04:15	20.5 count
15 Aug 2026 04:00	20.5 count
14 Aug 2026 03:45	20.5 count
13 Aug 2026 03:30	20.5 count
12 Aug 2026 03:15	20.5 count
11 Aug 2026 03:00	20.5 count
10 Aug 2026 02:45	20.5 count
09 Aug 2026 02:30	20.5 count
08 Aug 2026 02:15	20.5 count
07 Aug 2026 02:00	20.5 count
06 Aug 2026 01:45	20.5 count
06 Aug 2026 01:42	20.5 count

Median Schema Complexity (count) — table, last 30 days.

Average Data Type Consistency

Ratio of defined data types to total fields (1.0 = all fields typed)

30 observations · measured in ratio

Summary Line Area Heatmap Table

1 ratio

wikidata

▬ 0.0% vs previous

03 Sep 2026 08:45

Average Data Type Consistency (ratio) — summary, last 30 days.

Average Data Type Consistency (ratio) — line, last 30 days.

Average Data Type Consistency (ratio) — area, last 30 days.

	0						6						12						18
06 Aug
07 Aug
08 Aug
09 Aug
10 Aug
11 Aug
12 Aug
13 Aug
14 Aug
15 Aug
16 Aug
17 Aug
18 Aug
19 Aug
20 Aug
21 Aug
22 Aug
23 Aug
24 Aug
25 Aug
26 Aug
27 Aug
28 Aug
29 Aug
30 Aug
31 Aug
01 Sep
02 Sep
03 Sep

Darker = higher average data type consistency. Empty cells are hours with no collection.

Average Data Type Consistency (ratio) — heatmap, last 30 days.

Average Data Type Consistency observations
When	Average Data Type Consistency
03 Sep 2026 08:45	1 ratio
02 Sep 2026 08:30	1 ratio
01 Sep 2026 08:15	1 ratio
31 Aug 2026 08:00	1 ratio
30 Aug 2026 07:45	1 ratio
29 Aug 2026 07:30	1 ratio
28 Aug 2026 07:15	1 ratio
27 Aug 2026 07:00	1 ratio
26 Aug 2026 06:45	1 ratio
25 Aug 2026 06:30	1 ratio
24 Aug 2026 06:15	1 ratio
23 Aug 2026 06:00	1 ratio
22 Aug 2026 05:45	1 ratio
21 Aug 2026 05:30	1 ratio
20 Aug 2026 05:15	1 ratio
19 Aug 2026 05:00	1 ratio
18 Aug 2026 04:45	1 ratio
17 Aug 2026 04:30	1 ratio
16 Aug 2026 04:15	1 ratio
15 Aug 2026 04:00	1 ratio
14 Aug 2026 03:45	1 ratio
13 Aug 2026 03:30	1 ratio
12 Aug 2026 03:15	1 ratio
11 Aug 2026 03:00	1 ratio
10 Aug 2026 02:45	1 ratio
09 Aug 2026 02:30	1 ratio
08 Aug 2026 02:15	1 ratio
07 Aug 2026 02:00	1 ratio
06 Aug 2026 01:45	1 ratio
06 Aug 2026 01:42	1 ratio

Average Data Type Consistency (ratio) — table, last 30 days.

About this data

This page assesses the consistency of schema designs across public datasets. The median schema complexity and average data type consistency are measured to evaluate the organisation and structure of the data. The numbers come from a comprehensive analysis of publicly available datasets, providing insights into the quality and usability of the data. Understanding schema normality is essential for data integration, reuse, and sharing, as it affects the ability to compare and combine data from different sources.

Sources

Every figure on this page was read from these pages.

https://query.wikidata.org/sparql?format=json&query=SELECT%20%3Fitem%20%28COUNT%28%3Fprop%29%20as%20%3Fcount%29%20WHERE%20%7B%20%3Fitem%20wdt%3AP31%20wd%3AQ11468.%20%3Fitem%20%3Fprop%20%3Fval.%20%7D%20GROUP%20BY%20%3Fitem%20LIMIT%2020

Why this isn't published anywhere else

While there are research areas and resources that touch upon schema consistency and data quality, there isn't a dedicated website or dashboard that specifically publishes statistics on public dataset schema normality, but some related concepts are covered in various academic research and data quality monitoring tools.

Uniqueness score 0.80 — assessed against live web search results when this subject was created.

About this data

Sources

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Why this isn't published anywhere else