Abstract
In relational calculus, we simply specify what data is required, not how to obtain the required relation(s). Relational algebra, on the other hand, provides a collection of explicit operations in SELECT, JOIN, PROJECT etc., which can be used to tell the system how to derive desired relation(s).
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© 2016 Elvis C. Foster and Shripad Godbole
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Foster, E.C., Godbole, S. (2016). Relational Calculus. In: Database Systems. Apress, Berkeley, CA. https://doi.org/10.1007/978-1-4842-1191-5_8
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DOI: https://doi.org/10.1007/978-1-4842-1191-5_8
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Publisher Name: Apress, Berkeley, CA
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Online ISBN: 978-1-4842-1191-5
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