SHI Shugang, ZHENG Zhenmei, LU: Meiling. An Algorithm for Equivalence of Translating SQL Into Relational AlgebraJ. Journal of Computer Research and Development, 1991, 28(11): 18-25,37.
Citation:
SHI Shugang, ZHENG Zhenmei, LU: Meiling. An Algorithm for Equivalence of Translating SQL Into Relational AlgebraJ. Journal of Computer Research and Development, 1991, 28(11): 18-25,37.
SHI Shugang, ZHENG Zhenmei, LU: Meiling. An Algorithm for Equivalence of Translating SQL Into Relational AlgebraJ. Journal of Computer Research and Development, 1991, 28(11): 18-25,37.
Citation:
SHI Shugang, ZHENG Zhenmei, LU: Meiling. An Algorithm for Equivalence of Translating SQL Into Relational AlgebraJ. Journal of Computer Research and Development, 1991, 28(11): 18-25,37.
An Algorithm for Equivalence of Translating SQL Into Relational Algebra
This paper introduces a selection operation OSL and proposes an algorithm for translating SOL into relational algebra.The fundamental of the algorithm is that expansive query is translated into basic query,and basic query is translated into relational algebra query.
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