Register

Gate-2019

1,637 views
0 0 votes

ER- no of tables?

Please log in or register to answer this question.

Voting & Accepting an answer helps improve the community
← Previous · Gate-2000Next → · Doubt: gate2005 2015
← Previous in category · ME TestseriesNext in category → · Made Easy
Position:
Show:

Related questions

1 1 vote
1 1 answer
387
387 views
admin asked Aug 8, 2022
387 views
ISI 2019 | PCB CS | Question: 10
Let $R$ be a relation with functional dependencies $\mathcal{F}$. For any subset of attributes $X \subseteq R$, the closure of $X$ is defined as the set$$ X^{+}=\{A \in R...
0 0 votes
0 0 answers
349
349 views
admin asked Aug 8, 2022
349 views
ISI 2019 | PCB CS | Question: 20
Consider two $n \times 1$ vectors u and v, stored as tables $\mathrm{U(ind, val)}$ and $\mathrm{V(ind, val)}$ with the same schema. A row $\left(i, u_{i}\right)$ of tabl...
0 0 votes
1 1 answer
3.1k
3.1k views
mohit jain asked Jun 25, 2022
3,105 views
HCU PHD 2019 May
if E1 and E2 are relational algebra expressions then which of the following is NOT a relational algebra expression(a) E1 U E2(b) E1 X E2(c) E1 - E2(d) E1 / E2
0 0 votes
1 1 answer
648
648 views
mohit jain asked Jun 25, 2022
648 views
CIL, UPPCL AE CS 2019
Consider the relation schemas R(A, B, C, D) and S(D, E, F). What will be the degree of the resultant schema R * S, where star (*) symbol represents the natural join opera...