Question: _____ forms the foundational knowledge for SQL, Structured Query Language, which is the most popular way developers select, edit, and add data to a relational

_____ forms the foundational knowledge for SQL, Structured Query Language, which is the most popular way developers select, edit, and add data to a relational database.

a. Query algebra

b. Referential integrity

c. Entity diagramming

d. Relational algebra

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