Answer / divya

relational calculus is a declarative way to specify the queries,whereas relational algebra is a procedural way to specify the queries.

Answer / ajeet kr.sharma(weir)bharatpur

r.alg. is procedural lenguage while r.c. is non-procedural
lenguage.

Answer / megha aditya

relational algebra easy to manipulate then relational calculus..
modifications are easy in queries of relational algebra...  then in relational calculus

Answer / shalinithakur

RC are formed WFFs where as RA does not form any formula

Answer / ravina

The query is in the form of different operators in relational algebra and in calculus queries is in the form of formula.

Answer / parul

relational algebra is depend upon the order of operations
wheres
relational calculus does not depend upon the order of the operations

i have windows-xp processor with P4 system. whenever I tried to download foxpro for windows 2.6 on windows XP, my operating system failed to install foxpro for windows 2.6.please. how could i download , install & run foxpro for windows 2.6 easily on windows XP ?

0 Answers  

What are indexes in oracle?

0 Answers   CGI,

What happens when shared and exclusive locks are applied on data item?

0 Answers  

What are the concurrency problems a database faces?

0 Answers   Amazon,

What is the best database software for small businesses?

0 Answers  

Which Statement would you use to remove the EMPLOYEE_Id_PK PRIMARY KEY constraint and all depending constraints from the EMPLOYEE table?

0 Answers   3i Infotech,

How do you pass parameter in stored procedure?

0 Answers   CGI,

Is redis in memory database?

0 Answers  

Explain database partitioning.

0 Answers  

Explain inner and outer joins with examples.

0 Answers   Agilent,

What is the difference between data source and database?

0 Answers  

I have single column in a file. Input 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15 my output is file 1 have 1,2,3,10,11,12 file 2 have 4,5,6,13,14,15 and file 3 have 7,8,9 how is it possible in datastage

0 Answers   IBM,