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Regarding to the following B+Tree(m=4), If we delete index keys = all 4s, all 2s, and insert 6 what is the B+Tree index after the operations?  Note: Please show each step for deletion, not only the final answer.                                                                               

There are four relations as follows: Student (id(PK), name, dept_name(FK), gpa, major, phone, advisor_name) Department (dept_name(PK), building, budget) Takes (id(PK, FK), course_id(PK, FK), sec_id(PK, FK), semester(PK, FK), year(PK, FK) , grade) Course (course_id(PK), title, dept_name(FK), credit_hours) Note.  PK = Primary key, and FK = Foreign key. Given: the number of records in table Student = 1,000.              the number of records in table Course = 100.              the number of records in table Takes = 5,000.              the number of records in table Department = 10.   Given Query:  Find all section id, course id, title, and credit hour of the courses that were offered by the departments have offices in “Dell” building and have classes in Fall 2024.         A.) Create the SQL Command for this query.                                                                              (3 Points)         B.) According to A.) what is the relational algebra expression for the SQL command?         (3 Points)         C.) According to B.) what is the optimize relational expression tree?                                      (4 Points)

There are four relations as follows: Student (id(PK), name, dept_name(FK), gpa, major, phone, advisor_name) Department (dept_name(PK), building, budget) Takes (id(PK, FK), course_id(PK, FK), sec_id(PK, FK), semester(PK, FK), year(PK, FK) , grade) Course (course_id(PK), title, dept_name(FK), credit_hours) Note.  PK = Primary key, and FK = Foreign key. Given: the number of records in table Student = 1,000.              the number of records in table Course = 100.              the number of records in table Takes = 5,000.              the number of records in table Department = 10.   Given Student.id Ո Takes.id = . What is the estimate of number records for Student  Takes =  _______

Consider the join operation between relation r and s ( sθ  r ),  θ  is  r.A = s.B with the following information: Relation r contains 6,000 tuples and has 12 tuples per block. Relation s contains 5,000 tuples and has 5 tuples per block. There are 33 buffer blocks available in Memory. V(A, r) = 6,000 and V(B, s) = 5,000.          Find total cost (the number of block transfers) using Block Nested Loop Join =        

T1 deletes 0044.    What are operations for each timeline (t1, t2 and t3)? t1 A t2 B t3 C A _______ B _______ C _______

On the whole, when comparing prototype and exemplar theories of categorization, which theories do a better job of capturing human categorization performance? 

_________ memories are those that are typically spared in patientis with anterograde amnesia and are not associated with conscious recall in neurologically unimpaired people.

In a lexical decision task participants respond fastest when:

Analogies are

Treisman’s attenuation model explains the cocktail party effect through: