Suppose you have a table t with a column labeled 'XYZ. What is the difference between t.YYZ.cumsum() and t.XYZ.rolling(n).sum), where n is some integer (for example 10 or 100). You need to select all correct answers: O For cach row of the table, LYYZ.cumsum0 sums the values of XYZ from the beginning of the table until the current row O For cach row of the table, t.XYZ rolling(n) sum( sums the values of XYZ from the beginning of the table until the current row O For cach row of the table. t.XYZ.rolling(n).sum) sums the most recent nvalues of XYZ (including the current row) O In the last row of the table, tYYZ.cumsum) contains the sum of all valucs of thc column XYZ In the last row of the table, t:XYZrolling(n) sum() contains the sum of all valucs of the column XYZ.

Suppose you have a table t with a column labeled 'XYZ. What is the difference between t.YYZ.cumsum() and t.XYZ.rolling(n).sum), where n is some integer (for example 10 or 100). You need to select all correct answers: O For cach row of the table, LYYZ.cumsum0 sums the values of XYZ from the beginning of the table until the current row O For cach row of the table, t.XYZ rolling(n) sum( sums the values of XYZ from the beginning of the table until the current row O For cach row of the table. t.XYZ.rolling(n).sum) sums the most recent nvalues of XYZ (including the current row) O In the last row of the table, tYYZ.cumsum) contains the sum of all valucs of thc column XYZ In the last row of the table, t:XYZrolling(n) sum() contains the sum of all valucs of the column XYZ.

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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