Types of Computer Failures Database failures can usually be categorized into transaction, system, or media failures. Failed transactions in the middle of the execution can occur for many reasons, as described by Elmasri & Navathe (2015). Most Common Failures: The most common failures are described as computer …
Read MoreDescribe how disaster recovery from catastrophic failures is handled. Illustrate in detail Catastrophes can be broken down into two subcategories: physical problems and catastrophes. Physical catastrophes can be air conditioner failures, power issues, fire, or hacking attacks. Catastrophic errors are usually caused by …
Read MoreUnderstanding Database Anomalies - Insertion, Deletion, and Modification
Insertion, Deletion, and Modification Anomalies Are Considered Bad An insertion anomaly is a situation that arises when one is prevented from inserting data into a relation because the complete primary key is not available. No part of a primary key can be null. Harrington (2009) points out that insertion anomalies …
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