4 votes 4 votes Which of the following has same expressive power with regard to relational query language? Rational algebra and domain relational calculus Relational algebra and tuples relational calculus Relational algebra and domain relational calculus restricted to safe expression Relational algebra and tuples relational calculus restricted to safe expression i and ii only iii and iv only i and iii only ii and iv only Databases ugcnetcse-june2019-paper2 relational-calculus + – Arjun asked Jul 2, 2019 edited Jan 8 by makhdoom ghaya Arjun 3.6k views answer comment Share Follow See 1 comment See all 1 1 comment reply Abhisek Tiwari 4 commented Jul 3, 2019 reply Follow Share 2 Relational Algebra equivalent in expressing power to A. TRC B. DRC restricted to safe Operation. 0 votes 0 votes Please log in or register to add a comment.
1 votes 1 votes The expressive power of TRC,DRC is equivalent to relational aljebra .hence the option B is correct. DIBAKAR MAJEE answered Apr 28, 2020 DIBAKAR MAJEE comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes please refer here: 1)https://gateoverflow.in/3554/gate2006-it-15 2)https://gateoverflow.in/825/gate2002-1-20 Hira Thakur answered Jul 3, 2019 Hira Thakur comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Ans: (B) c and d only. see here: https://gateoverflow.in/3554/gate2006-it-15 Gaurav Yadav answered Jul 31, 2019 Gaurav Yadav comment Share Follow See all 0 reply Please log in or register to add a comment.
0 votes 0 votes Relational algebra has same expressive power as safe relational calculus (safe tuple relational calculus and safe domain relational calculus. So B is correct. smsubham answered Nov 28, 2019 smsubham comment Share Follow See all 0 reply Please log in or register to add a comment.