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Recent questions tagged er-diagram

2 votes

2 answers

1

ER Diagram: What is the cardinality of this relationship? is m-n cardinality correct? if not, why?
What is the cardinality of this relationship? is m-n cardinality correct? if not, why?

daksirp asked in Databases Apr 23, 2022

590 views

1 vote

0 answers

2

#selfdoubt
In the above ER diagram how many relational table and attributes will be in respective table??

BHOJARAM asked in Databases Dec 21, 2021

424 views

1 vote

2 answers

3

Minimum number of tables needed to construct a self referential relation with many to many relationship?

Srken asked in Databases Nov 13, 2021

by Srken

793 views

0 votes

0 answers

4

#DBMS #E-R diagram
Can anyone verify this? What is the minimum number of tables required in the given situation? Assume there are two entities E1 containing attributes A1 and A2 and E2 containing attributes B1 and B2 attributes respectively, and between E1 and E2 relationship is R, which contains attribute C.

Crackca asked in Databases Oct 19, 2021

302 views

0 votes

2 answers

5

ER Model to Relational Model Conversion
What is the minimum number of relations required to represent a one-to-many relationship having total participation on the many side? Can i have just a single table with all attributes and (A1,B1) as a composite primary key?

priyanshu710 asked in Databases Sep 16, 2021

by priyanshu710

437 views

1 vote

1 answer

6

What is the degree of a Recursive Relation in Er Modelling?
What is the degree of a Recursive Relation in Er Modelling? I think its 1 since only one entity set is participating but can it be 2 since role is different for entity set?

Yashvir asked in Databases Sep 10, 2021

302 views

1 vote

2 answers

7

UGC NET CSE | December 2019 | Part 2 | Question: 23
Find minimum number of tables required for converting the following entity relationship diagram into relational database? $2$ $4$ $3$ $5$

soujanyareddy13 asked in Databases May 12, 2021

by soujanyareddy13

1.4k views

6 votes

5 answers

8

UGC NET CSE | January 2017 | Part 2 | Question: 18
Let $M$ and $N$ be two entities in an $E-R$ diagram with simple single value attributes. $R_{1}$ and $R_{2}$ are two relationship between $M$ and $N$, where as $R_{1}$, is one-to-many and $R_{2}$, is many-to-many. The minimum number of tables required to represent $M, N, R_{1}$, and $R_{2}$, in the relational model are ___________. $4$ $6$ $7$ $3$

go_editor asked in Databases Mar 24, 2020

2.1k views

15 votes

3 answers

9

GATE CSE 2020 | Question: 14
Which one of the following is used to represent the supporting many-one relationships of a weak entity set in an entity-relationship diagram? Diamonds with double/bold border Rectangles with double/bold border Ovals with double/bold border Ovals that contain underlined identifiers

Arjun asked in Databases Feb 12, 2020

by Arjun

8.8k views

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Recent questions tagged er-diagram