Question

Why do these sample relations have many valid joins but only one composition?

score 44 · Answer 1 · 2024-02-28T22:12:51.047000

44

Views

Why do these sample relations have many valid joins but only one composition?

Published on 28 February 2024 at 22:12

score 164 · Answer 2 · 2024-02-20T14:45:27.407000

164

Views

Can modern SQL syntax be translated into a relational algebra tree?

Published on 20 February 2024 at 14:45

score 66 · Answer 3 · 2024-02-15T23:09:49.457000

66

Views

How do the attributes suddenly came into play since the exercise statement didn't specify these two at the start?

Published on 15 February 2024 at 23:09

score 255 · Answer 4 · 2023-10-05T05:42:30.157000

255

Views

"Exactly one" in Relational Algebra

Published on 05 October 2023 at 05:42

score 47 · Answer 5 · 2023-09-23T18:17:50.840000

47

Views

joining tables in relational algebra, what happens to the attributes which have the same name?

Published on 23 September 2023 at 18:17

score 137 · Answer 6 · 2023-09-12T10:50:14.467000

137

Views

Can Selections on Cartesian Products be re-written as Theta Joins.?

Published on 12 September 2023 at 10:50

score 246 · Answer 7 · 2022-12-18T14:19:42.920000

246

Views

relational algebra expression and the sql query

Published on 18 December 2022 at 14:19

score 1.3k · Answer 8 · 2022-08-20T06:14:47.740000

1.3k

Views

SQL and Relational Algebra queries for three tables: student, studies and course

Published on 20 August 2022 at 06:14

score 554 · Answer 9 · 2022-07-02T04:58:11.817000

554

Views

How to get ORDER BY clause representation in Relational Algebra?

Published on 02 July 2022 at 04:58

score 171 · Answer 10 · 2022-05-22T12:13:14.567000

171

Views

Relational Algebra: Problems with division operator

Published on 22 May 2022 at 12:13

score 171 · Answer 11 · 2022-04-20T21:22:15.827000

171

Views

How to implement the division of two relations in mapreduce?

Published on 20 April 2022 at 21:22

score 259 · Answer 12 · 2022-04-09T09:28:39.793000

259

Views

Relational algebra: Difference between dates

Published on 09 April 2022 at 09:28

score 30 · Answer 13 · 2022-04-06T03:44:15.413000

30

Views

How can i display a different tuple in a Table that came from a merge by other tables?

Published on 06 April 2022 at 03:44

score 316 · Answer 14 · 2022-03-15T22:10:00.213000

316

Views

Pair of atributes as a relation key - relational algebra

Published on 15 March 2022 at 22:10

score 481 · Answer 15 · 2022-03-11T16:22:50.090000

481

Views

Is there a way to refer to the current date in relational algebra, like CURDATE in MySQL?

Published on 11 March 2022 at 16:22

score 738 · Answer 16 · 2022-02-15T09:47:01.893000

738

Views

Finding max without aggregate operation in relational algebra

Published on 15 February 2022 at 09:47

score 45 · Answer 17 · 2022-02-12T22:24:46.347000

45

Views

RA translation to natural language

Published on 12 February 2022 at 22:24

score 492 · Answer 18 · 2022-01-09T07:40:00.370000

492

Views

I want to convert a sql query to relational algebra containing exist keyword

Published on 09 January 2022 at 07:40

score 348 · Answer 19 · 2022-01-08T17:29:04.263000

348

Views

How to add virtual column in relational algebra

Published on 08 January 2022 at 17:29

score 176 · Answer 20 · 2021-11-05T15:12:35.367000

176

Views

How can a referential integrity constraint be expressed through relational algebra?

Published on 05 November 2021 at 15:12

List Question

Why do these sample relations have many valid joins but only one composition?

Can modern SQL syntax be translated into a relational algebra tree?

How do the attributes suddenly came into play since the exercise statement didn't specify these two at the start?

"Exactly one" in Relational Algebra

joining tables in relational algebra, what happens to the attributes which have the same name?

Can Selections on Cartesian Products be re-written as Theta Joins.?

relational algebra expression and the sql query

SQL and Relational Algebra queries for three tables: student, studies and course

How to get ORDER BY clause representation in Relational Algebra?

Relational Algebra: Problems with division operator

How to implement the division of two relations in mapreduce?

Relational algebra: Difference between dates

How can i display a different tuple in a Table that came from a merge by other tables?

Pair of atributes as a relation key - relational algebra

Is there a way to refer to the current date in relational algebra, like CURDATE in MySQL?

Finding max without aggregate operation in relational algebra

RA translation to natural language

I want to convert a sql query to relational algebra containing exist keyword

How to add virtual column in relational algebra

How can a referential integrity constraint be expressed through relational algebra?

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