October 16, 2023
Question 380 ____includes a query language and commands to insert tuples into, delete tuples from, and modify tuples in the database. A Query language B Data-manipulation […]
October 16, 2023
Question 11 The relation schemas R 1 and R 2 form a Lossless join decomposition of R if and only if: R 1 ∩ R 2 […]
October 16, 2023
Question 16 In a relational data model, which one of the following statements is TRUE? A A relation with only two attributes is always in BCNF. […]
October 17, 2023
Question 249 An instance of relational schema R(A, B, C) has distinct values of A including NULL values. Which one of the following is true? A […]
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