Suppose relation R (x, y, z, w) has no tuples. Consider the trigger: CREATE TRIGGER T AFTER INSERT ON R REFERENCING NEW ROW AS newRow FOR EACH ROw WHEN ((newRow.x * newRow.y) > 22) INSERT INTOR VALUES(newRow.x + newRow.w, newRow.y - newRow.z, newRow.z + 1, newRow.w-1); How many tuples will be in relation R after inserting tuple (5, 9, 2, 5) into the relation?

Suppose relation R (x, y, z, w) has no tuples. Consider the trigger: CREATE TRIGGER T AFTER INSERT ON R REFERENCING NEW ROW AS newRow FOR EACH ROw WHEN ((newRow.x * newRow.y) > 22) INSERT INTOR VALUES(newRow.x + newRow.w, newRow.y - newRow.z, newRow.z + 1, newRow.w-1); How many tuples will be in relation R after inserting tuple (5, 9, 2, 5) into the relation?

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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Concept explainers

Intermediate SQL Concepts

A query is a request for data or information from one or more database tables. This information could be presented in the form of pictorials, graphs, or complicated findings which helps in easy interpretation. Structured Query Language (SQL) is the most widely used programming language for retrieving and organizing data from relational databases. Collection of tables with rows and columns is referred to as a database. SQL is the language of databases. It makes it easier to extract specific data from databases, which can then be used for analysis.

Question

24 of 40
Suppose relation R (x, y, z, w) has no tuples. Consider the trigger:
CREATE TRIGGER T
AFTER INSERT ON R
REFERENCING NEW ROW AS newRow
FOR EACH ROw
WHEN ((newRow.x * newRow.y) > 22)
INSERT INTO R VALUES(newRow.x + newRow.w,
newRow.y - newRow.z,
newRow.z + 1, newRow.w-1);
How many tuples will be in relation R after inserting tuple (5, 9, 2, 5) into the relation?
Answer:

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