Unique key: Revision history

25 April 2024

• curprev 18:4118:41, 25 April 2024 Avocado talk contribs 10,168 bytes +60 Adding short description: "Concept in relational database design" undo Tag: Shortdesc helper

23 March 2023

• curprev 20:1920:19, 23 March 2023 Sauer202 talk contribs 10,108 bytes +76 →See also undo
• curprev 20:1920:19, 23 March 2023 Sauer202 talk contribs 10,032 bytes +59 →See also undo
• curprev 20:1820:18, 23 March 2023 Sauer202 talk contribs 9,973 bytes 0 Common nouns are not capitalised in English undo
• curprev 17:4717:47, 23 March 2023 Oradium talk contribs m 9,973 bytes −1 No edit summary undo
• curprev 16:2716:27, 23 March 2023 Oradium talk contribs 9,974 bytes −48 Attempting again to clarify the intro para. This article is a duplicate of candidate key but if we must have both then at least we might be able to get them to agree. undo

18 August 2022

• curprev 02:5302:53, 18 August 2022 2001:1c04:4003:8900:91bf:2091:efc3:dda4 talk 10,022 bytes 0 →Summary: in the Summary section, undo inadvertent transposition (a "draggo"?) which occurred on 28 October 2021 undo

30 May 2022

• curprev 03:0203:02, 30 May 2022 49.184.178.173 talk 10,022 bytes +281 →top: UNIQUE undo Tags: Mobile edit Mobile app edit Android app edit

24 April 2022

• curprev 02:3602:36, 24 April 2022 Awserer talk contribs 9,741 bytes −34 it seems that in current version there is no described problem undo

4 January 2022

• curprev 01:3701:37, 4 January 2022 Certes talk contribs m 9,775 bytes −22 Disambiguating links to Constraint (link changed to Constraint (database)) using DisamAssist. undo

1 January 2022

• curprev 02:3402:34, 1 January 2022 BattyBot talk contribs 9,797 bytes −3 →top: Removed Template:Multiple issues and General fixes undo Tag: AWB

14 December 2021

• curprev 09:3109:31, 14 December 2021 Sauer202 talk contribs 9,800 bytes 0 No edit summary undo
• curprev 09:3109:31, 14 December 2021 Sauer202 talk contribs 9,800 bytes 0 Common nouns are not capitalised undo

12 December 2021

• curprev 12:3812:38, 12 December 2021 Narky Blert talk contribs 9,800 bytes +25 dab-needed tag undo

30 October 2021

• curprev 14:2914:29, 30 October 2021 Luxtaythe2nd talk contribs 9,775 bytes +6 boldened name undo

28 October 2021

• curprev 16:2116:21, 28 October 2021 Hamiecod talk contribs 9,769 bytes −480 Rewrote the lead of the article undo Tag: Disambiguation links added

9 September 2021

• curprev 18:2018:20, 9 September 2021 JustAMuggle talk contribs 10,249 bytes −1 Copy edit. undo

15 December 2020

• curprev 02:0302:03, 15 December 2020 Monkbot talk contribs m 10,250 bytes −26 Task 18 (cosmetic): eval 3 templates: del empty params (4×); hyphenate params (2×); undo Tag: AWB

7 September 2020

• curprev 09:4209:42, 7 September 2020 FactorialG talk contribs 10,276 bytes −57 Fix definition of Composite key. undo

27 June 2020

• curprev 12:4512:45, 27 June 2020 Joseywales1961 talk contribs m 10,333 bytes −7 Rollback edit(s) by 1.186.178.209 (talk): Vandalism (RedWarn rev14) undo Tags: RW Rollback
• curprev 12:4512:45, 27 June 2020 1.186.178.209 talk 10,340 bytes +7 No edit summary undo Tags: Mobile edit Mobile web edit

11 May 2020

• curprev 18:5718:57, 11 May 2020 DannyS712 bot talk contribs m 10,333 bytes +72 Task 70: Update syntaxhighlight tags - remove use of deprecated <source> tags undo Tag: AWB

1 April 2020

• curprev 18:1118:11, 1 April 2020 Oradium talk contribs 10,261 bytes −12 set of could be zero, one or more undo

24 March 2020

• curprev 02:2902:29, 24 March 2020 Prakash Nadkarni talk contribs 10,273 bytes −90 Removed the false assertion that "alternate key" and "primary key" are synonyms of "unique key". There may be more than 1 unique key in a table (e.g., a surrogate/machine-generated key, plus a combination of columns whose values are unique for every row), but only 1 unique key may be designated as a table's primary key: the multi-column key is typically the alternate key, used to enforce UNIQUE constraints. Also simplified the CS-gobbledygook in 1st para, which interfered with understanding. undo

27 February 2020

• curprev 16:1116:11, 27 February 2020 195.114.237.86 talk 10,363 bytes −4 corrected BNF for PRIMARY KEY | UNIQUE, expressions are not allowed and second column name is optional so requires [ ] around it undo

8 February 2020

• curprev 13:4813:48, 8 February 2020 Mindmatrix talk contribs m 10,367 bytes −5 Reverted edits by 2409:4041:2E9B:8F3E:E5E7:FF01:45C2:55F4 (talk) to last version by InternetArchiveBot undo Tag: Rollback
• curprev 11:0611:06, 8 February 2020 2409:4041:2e9b:8f3e:e5e7:ff01:45c2:55f4 talk 10,372 bytes +5 Ankit undo Tags: Mobile edit Mobile web edit

19 December 2019

• curprev 05:4805:48, 19 December 2019 InternetArchiveBot talk contribs 10,367 bytes +82 Bluelinking 1 books for verifiability.) #IABot (v2.1alpha3 undo

3 November 2019

• curprev 15:3315:33, 3 November 2019 Frap talk contribs 10,285 bytes −44 →Differences between Primary Key constraint and Unique constraint undo

17 October 2019

• curprev 05:4405:44, 17 October 2019 Oradium talk contribs 10,329 bytes +88 updated SQL syntax undo
• curprev 05:3905:39, 17 October 2019 Oradium talk contribs 10,241 bytes −60 elmiminared the tautologous term "unique key" undo
• curprev 05:3405:34, 17 October 2019 Oradium talk contribs 10,301 bytes +121 added more terminology to the intro para undo

25 September 2018

• curprev 20:4720:47, 25 September 2018 Oradium talk contribs m 10,180 bytes −99 Undid revision 856987974 by 75.139.146.26 (talk) undo Tag: Undo

28 August 2018

• curprev 20:3320:33, 28 August 2018 75.139.146.26 talk 10,279 bytes +99 No edit summary undo Tags: Visual edit Mobile edit Mobile web edit

16 August 2018

• curprev 08:2108:21, 16 August 2018 Jabberjaw talk contribs 10,180 bytes +111 Filled in 2 bare reference(s) with reFill () undo
• curprev 08:2008:20, 16 August 2018 Jabberjaw talk contribs 10,069 bytes −41 clean up; delink; using AWB undo

20 June 2018

• curprev 03:5703:57, 20 June 2018 Oradium talk contribs 10,110 bytes −267 removed redundant and contradictory statements about values being combined/not combined undo

19 June 2018

• curprev 18:3218:32, 19 June 2018 Oradium talk contribs 10,377 bytes −141 aligned definition with CANDIDATE KEY undo

6 May 2018

• curprev 20:5320:53, 6 May 2018 Dwo talk contribs m 10,518 bytes −6 op pl undo

5 January 2018

• curprev 03:5203:52, 5 January 2018 Nbarth talk contribs 10,524 bytes +634 →Defining unique keys in SQL: Move "Differences" section back from Primary key undo
• curprev 03:5103:51, 5 January 2018 Nbarth talk contribs 9,890 bytes −5,270 Move primary key specific content to primary key undo

15 November 2017

• curprev 08:0408:04, 15 November 2017 Shiyu Ji talk contribs 15,160 bytes +10 since the discussion is a digression, make it a footnote undo
• curprev 08:0108:01, 15 November 2017 Shiyu Ji talk contribs 15,150 bytes 0 make the explanation of the name of unique key clearer undo

18 October 2017

• curprev 18:5918:59, 18 October 2017 Ryoqun talk contribs m 15,150 bytes +61 →Surrogate keys undo

5 June 2017

• curprev 16:5216:52, 5 June 2017 189.158.58.29 talk 15,089 bytes +16 No edit summary undo
• curprev 16:4416:44, 5 June 2017 189.158.58.29 talk 15,073 bytes +1 No edit summary undo
• curprev 16:4316:43, 5 June 2017 189.158.58.29 talk 15,072 bytes −6 No edit summary undo

3 June 2017

• curprev 19:4219:42, 3 June 2017 AnomieBOT talk contribs m 15,078 bytes +15 Dating maintenance tags: {{Citation needed}} undo
• curprev 17:4217:42, 3 June 2017 189.158.58.29 talk 15,063 bytes −192 Removed cited resource because it is clearly non-familiarized with the relational model, its implications and its terminology. undo Tag: references removed
• curprev 17:3717:37, 3 June 2017 189.158.58.29 talk 15,255 bytes −1 →Summary undo