4. Suppose one transaction tried to add $100 to an account whose balance is $200 whileanother tries to withdraw $100 from the same account. Describe an interweaving of thesetransactions that would lead to a final balance of $100. Describe an interweaving thatwould lead to a final balance of $300.

The final balance of $100 here are two possible interweavings of the transactions that would lead to…

- Suppose one transaction tried to add $100 to an account who another tries to withdraw $100 from the same account. Desc transactions that would lead to a final balance of $100. Desc would lead to a final balance of $300.

- Suppose one transaction tried to add $100 to an account who another tries to withdraw $100 from the same account. Desc transactions that would lead to a final balance of $100. Desc would lead to a final balance of $300.

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

Types of database architectures

A Database Architecture represents the Database Management System’s (DBMS) design (schema). The DBMS architecture makes it easy to understand the components involved in the database system and their relations. The DBMS architecture may vary based on the system on which it runs. Some systems contain both client and server machines whereas some run only on a server machine. Based on the architecture, the system can be classified as centralized, decentralized, or hierarchical.

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4. Suppose one transaction tried to add $100 to an account whose balance is $200 while
another tries to withdraw $100 from the same account. Describe an interweaving of these
transactions that would lead to a final balance of $100. Describe an interweaving that
would lead to a final balance of $300.

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