Essentials of Computing - Data Management

#19 Dat a Management 1 #19 Data Management The notes are 14 very dense pages filled with paragraphs. Here is a simple pdf summarizing everything as much as possible. ATB!  Raghav, Computing Rep Data Data Information encoded and structured for subsequent processing Contains multiple symbols Information Data that has been interpreted Data Life Cycle Creation  Storage  Usage  Archival  Destruction Data Privacy Data Privacy The requirement for data to be accessed by or disclosed to authorized persons only Examples for Data Privacy Websites tracking shopping preferences Identity theft using ID cards Chinaʼs facial recognition based credit score system Data Security Ways to protect data from malicious threats Data Integrity

#19 Dat a Management 2 Data Integrity A process that ensures the accuracy, completeness, consistency, and validity of data Covers data in storage, during processing, and while in transit Compromised Integrity When data is replicated or transferred, it should be intact and unaltered between updates. Error-checking methods and validation methods are used to ensure data integrity Storage Threats Behavioral Lapses Human stupidity, users using weak passwords or being careless when dealing with data $227.8m lost to top 10 scams in first half of 2022 Mismanagement by Multiple Users Multiple users working on the same file way overwrite each othersʼ data Natural Disasters Natural disasters can destroy the computer system and/or storage device physically 50% of data centers canʼt withstand natural disasters without failures, Zenium Tech Partners Unauthorized intrusion into the system If the system is vulnerable, data is susceptible to corruption and lost Singhealth data breach, 1.5m usersʼ data compromised Data Protection Data Backup

#19 Dat a Management 3 Creating copies of data and storing them separately Safety precaution for unexpected loss of data due to unintended data corruption or errors. A backup is typically a short-term solution and may be performed on a regular basis Data Archive Storing data that is not actively used but kept for historical references or auditing purposes It ensures that important records remain available years after they were created In most cases, the purpose of data archiving is to meet legal and compliance requirements Data Backup VS Data Archive Comparison Chart Backup Archive Storage Method Backups are copies stored in a different location from Original Archived Data is Original, moved to an archive storage location Data State Constantly Changing Once archived, do not modify Retention Policy Periodically overwrite Store for the long term Storage Type Hot Cloud & Local Storage Cold Cloud & Tape Archives Data Scope All data Specific Files Restriction of Access Passwords, 2FA, Biometrics IAM Identitity and Access Management) Solution RBAC Role Based Access Control) Solution Version Control (Git)

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