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Recent questions tagged relational-algebra

32 votes
2 answers
135
GATE CSE 2019 | Question: 55
Consider the following relations $P(X,Y,Z), Q(X,Y,T)$ and $R(Y,V)$ ... Answer: ________
Consider the following relations $P(X,Y,Z), Q(X,Y,T)$ and $R(Y,V)$.$$\overset{\textbf{Table: P}}{\begin{array}{|l|l|l|} \hline \textbf{X} & \textbf{Y} & \textbf{Z} \\\hli...
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–1 votes
0 answers
138
MadeEasy Test Series 2019: Databases - Relational Algebra
PLEASE EXPLAIN WHEATHER IT WOULD BE SOME EC DEPARMENT OR ALL EC DEPARTMENT I THINK ALL BECOZ IT IS SELECTION EID OF STUDENT WHO HAVE NOT ENROLLED IN ANY COURSE OF EC
PLEASE EXPLAIN WHEATHER IT WOULD BE SOME EC DEPARMENT OR ALL EC DEPARTMENT I THINK ALL BECOZ IT IS SELECTION EID OF STUDENT WHO HAVE NOT ENROLLED IN ANY COURSE OF EC
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1 votes
1 answer
144
Relation algebra Query
Consider the following relation and instance of relation: Supply(sid,Sname) #sid is key Parts(pid,Pname,Pcolor) #pid is the key Catalog(sid,pid) #sid,pid is the key Number of tuples returned by the above Query is ……...
Consider the following relation and instance of relation:Supply(sid,Sname) #sid is keyParts(pid,Pname,Pcolor) #pid is the keyCatalog(sid,pid) #sid,pid is the keyNumber...
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0 votes
1 answer
147
Aggregate Functions in relational algebra
is aggregate functions in relational algebra important with GATE's perspective or can I skip it?
is aggregate functions in relational algebra important with GATE's perspective or can I skip it?
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0 votes
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148
Korth
Give the relational algebra expression- works(person-name, company-name, salary) person-name is primary key Find the names of all employees who earn more than every employee of small bank corp
Give the relational algebra expression-works(person-name, company-name, salary) person-name is primary keyFind the names of all employees who earn more than every emp...
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