Suppose that we are using extendable hashing on a file that contains records with the following search-key values: 2, 3, 5, 7, 11, 17, 19, 23, 29, 31 Show the extendable hash structure for this file if the hash function is h(x) = x mod 8 and buckets can hold three records.
Answer to relevant QuestionsShow how the extendable hash structure of Exercise changes as the result of each of the following steps:a. Delete 11.b. Delete 31.c. Insert 1.d. Insert 15.Suppose that we are using extendable hashing on a file that contains ...Consider the account relation as shown below.a. Construct a bitmap index on the attributes branch-name and balance, dividing balance values into 4 ranges: below 250, 250 to below 500, 500 to below 750, and 750 and above.b. ...Let relations r1 (A, B, C) and r2 (C, D, E) have the following properties: r1 has 20,000 tuples, r2 has 45,000 tuples, 25 tuples of r1 fit on one block, and 30 tuples of r2 fit on one block. Estimate the number of block ...Design sorting based and hashing algorithms for computing the division operation.SQL allows relations with duplicates. a. Define versions of the basic relational-algebra operations σ, Π, ×, Π, −, ∪, and ∩ that work on relationswith duplicates, in a way consistent with ...
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