Relational algebra: Revision history

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curprev 18:2218:22, 20 April 2024‎ Lucasrpatten talk contribs‎ 51,534 bytes +109‎ →‎Antijoin (▷): Noted that antijoin is equivalent to minus or subraction under certain circumstances undo Tag: Visual edit

curprev 18:3018:30, 16 April 2024‎ Nabijaczleweli talk contribs‎ 51,425 bytes +63‎ Natural join (⋈) -> Natural join (⨝) undo

curprev 13:3913:39, 19 February 2024‎ Mindmatrix talk contribs‎ m 51,362 bytes −1‎ revert - please read the description that follows the table undo Tag: Manual revert
curprev 04:4704:47, 19 February 2024‎ MrSamples talk contribs‎ 51,363 bytes +1‎ →‎Division (÷): The example division incorrectly gives a Sarah element even though both of the Sarah elements are divided out in the operation. I have fixed it with Eugene, as that is the correct element in the operation. undo Tag: Reverted

curprev 15:5315:53, 4 February 2024‎ Mindmatrix talk contribs‎ 51,362 bytes −224‎ revert - rm promotional link disguised as a ref undo Tag: Manual revert
curprev 13:3113:31, 4 February 2024‎ James7655 talk contribs‎ m 51,586 bytes +224‎ →‎Natural join (⋈) undo Tags: Reverted Visual edit Newcomer task Newcomer task: references

curprev 22:2722:27, 7 January 2024‎ Liz talk contribs‎ m 51,362 bytes −15‎ Removing link(s) Wikipedia:Articles for deletion/Rel (DBMS) closed as soft delete (XFDcloser) undo

curprev 11:4611:46, 11 October 2023‎ ThisIsNeverUsed talk contribs‎ 51,377 bytes +29‎ →‎top: added wikilinks + ce undo

curprev 13:5013:50, 25 September 2023‎ The Night Watch talk contribs‎ m 51,348 bytes −4‎ Undid edits by 122.15.3.3 (talk) to last revision by Everup: no need for quotations undo Tags: Undo SWViewer [1.4]
curprev 13:4913:49, 25 September 2023‎ 122.15.3.3 talk‎ 51,352 bytes +4‎ →‎Introduction undo Tag: Reverted

curprev 16:0216:02, 27 August 2023‎ Everup talk contribs‎ 51,348 bytes +1‎ →‎Introduction undo

curprev 17:5417:54, 12 August 2023‎ OAbot talk contribs‎ m 51,347 bytes +32‎ Open access bot: doi added to citation with #oabot. undo

curprev 12:1412:14, 24 May 2023‎ 78.153.166.86 talk‎ 51,315 bytes −1‎ typo "jioins" rather than joins undo

curprev 05:4605:46, 23 May 2023‎ Uscitizenjason talk contribs‎ 51,316 bytes +273‎ Add a brief description of the sets the relational algebra operates on undo

curprev 06:4506:45, 26 April 2023‎ Galobtter talk contribs‎ 51,043 bytes −49‎ use math template undo Tag: 2017 wikitext editor

curprev 12:5512:55, 22 April 2023‎ Mate0Kapush talk contribs‎ 51,092 bytes −3‎ No edit summary undo Tag: Visual edit

curprev 12:2012:20, 7 April 2023‎ 2a02:810d:f40:ee4:9c6f:a5ff:fe50:a74a talk‎ 51,095 bytes −81‎ Undid revision 1137558682 by Jarfuls of Tweed (talk) undo Tag: Undo

curprev 10:2210:22, 7 March 2023‎ D.Lazard talk contribs‎ 51,176 bytes +29‎ →‎top: fixing a link undo

curprev 10:0410:04, 6 March 2023‎ D.Lazard talk contribs‎ 51,147 bytes 0‎ →‎top: "well-founded semantics” applies to data and queries, not to algebraic structures (see talk) undo

curprev 17:4517:45, 5 March 2023‎ Siddharthist talk contribs‎ 51,147 bytes +505‎ →‎Use of algebraic properties for query optimization: More thorough introduction undo Tag: 2017 wikitext editor
curprev 17:3317:33, 5 March 2023‎ Siddharthist talk contribs‎ 50,642 bytes +118‎ →‎Joins and join-like operators: Propose split undo Tag: 2017 wikitext editor
curprev 17:1417:14, 5 March 2023‎ Siddharthist talk contribs‎ 50,524 bytes +739‎ →‎Use of algebraic properties for query optimization: Add diagram showing query plan for triangle query undo Tag: 2017 wikitext editor

curprev 23:5123:51, 1 March 2023‎ 198.137.18.210 talk‎ 49,785 bytes +1‎ Added missing comma to expression of left outer join in basic operators undo

curprev 19:1919:19, 1 January 2023‎ Citation bot talk contribs‎ 49,880 bytes +32‎ Add: s2cid. | Use this bot. Report bugs. | Suggested by Abductive | #UCB_webform 2641/3850 undo

curprev 21:3221:32, 24 December 2022‎ Karl Dickman talk contribs‎ 49,848 bytes +3‎ →‎{{visible anchor|Semijoin}} (⋉)(⋊): Change double parenthetical to (⋉ and ⋊) undo

curprev 02:3902:39, 31 October 2022‎ Explicit talk contribs‎ m 49,845 bytes −63‎ Removing link(s) Wikipedia:Articles for deletion/D (data language specification) closed as soft delete (XFDcloser) undo

curprev 02:3502:35, 28 July 2022‎ Beland talk contribs‎ m 49,908 bytes −3‎ convert special characters found by Wikipedia:Typo Team/moss (via WP:JWB) undo

curprev 01:4101:41, 25 June 2022‎ Beland talk contribs‎ 49,911 bytes −1‎ convert special character undo

curprev 01:1801:18, 13 June 2022‎ Beland talk contribs‎ m 49,912 bytes −3‎ convert special characters found by Wikipedia:Typo Team/moss (via WP:JWB) undo

curprev 12:0312:03, 6 June 2022‎ 178.44.50.139 talk‎ 49,915 bytes +6‎ →‎Operations for domain computations undo

curprev 08:4108:41, 31 May 2022‎ Beland talk contribs‎ m 49,909 bytes −25‎ convert special characters found by Wikipedia:Typo Team/moss (via WP:JWB) undo

curprev 17:4417:44, 29 May 2022‎ Elharo talk contribs‎ m 49,934 bytes −239‎ combine duplicate reference that was added twice undo

curprev 11:4811:48, 9 May 2022‎ TeeEmCee talk contribs‎ m 50,173 bytes −5‎ →‎Joins and join-like operators: slight grammatical tweak undo
curprev 11:4711:47, 9 May 2022‎ TeeEmCee talk contribs‎ 50,178 bytes +68‎ →‎{{visible anchor|Natural join}} ({{visible anchor|⋈}}): clarify Fun(t) undo

curprev 23:3823:38, 1 May 2022‎ Gjvnq talk contribs‎ m 50,110 bytes +255‎ →‎{{visible anchor|Semijoin}} (⋉)(⋊): Improved math typesetting undo Tag: 2017 wikitext editor

curprev 15:5215:52, 15 April 2022‎ AnomieBOT talk contribs‎ m 49,855 bytes 0‎ Dating maintenance tags: {{Fact}} undo
curprev 15:3115:31, 15 April 2022‎ Mikeblas talk contribs‎ m 49,855 bytes +15‎ →‎Outer joins: fix link undo
curprev 15:3015:30, 15 April 2022‎ Mikeblas talk contribs‎ 49,840 bytes +150‎ move unicode to footnotes; mark unreferenced passages undo

curprev 14:4814:48, 31 March 2022‎ 87.92.63.150 talk‎ 49,690 bytes −276‎ →‎Transitive closure: Removed the useless "sketch" of the proof that transitive closure is not expressible. The reference is enough. undo

curprev 19:1819:18, 4 February 2022‎ 184.98.149.221 talk‎ 49,966 bytes −5‎ →‎Natural join (⋈) undo Tags: Mobile edit Mobile web edit

curprev 14:2914:29, 31 January 2022‎ 1.187.84.65 talk‎ 49,971 bytes 0‎ No edit summary undo
curprev 14:2814:28, 31 January 2022‎ 1.187.84.65 talk‎ 49,971 bytes 0‎ No edit summary undo

curprev 16:5516:55, 28 January 2022‎ 90.241.184.111 talk‎ 49,971 bytes −1‎ Fix typo renmaned -> renamed undo Tag: Visual edit

curprev 05:0605:06, 1 December 2021‎ MaxEnt talk contribs‎ 49,972 bytes +8‎ para breaks in wall of text lead undo

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