Information management and documentation
Information management is the work of collecting, recording, organising, storing, finding and protecting information so people can use it when needed.
Documentation means writing information down in a clear, agreed form. Good records have:
- a clear name (for example marksheet-2026-maths, not file1),
- a date and the author,
- a type or category,
- a version number when the file changes.
Documents let another person understand and reuse the information later.
Managing and using information by computer
A computer stores information as files in folders. A folder can hold folders, like a tree. Good habits: short clear names, one place for one kind of file, and old files archived.
For large amounts of connected data we use a database: data is kept in tables of rows and columns, so we can search, sort and filter in a moment. A school can keep student records in a table and find any student by name or roll number.
Spreadsheets help to calculate and draw charts. Cloud services let many people share the same file.
Information protection and security
Information must be protected from three problems: being seen by the wrong person, being changed by mistake or by an attacker, and being lost.
- Access control: passwords, fingerprints and permissions say who may open or edit a file.
- Backup: keep a copy in another place (the 3-2-1 idea: 3 copies, 2 kinds of storage, 1 away from home).
- Updates and antivirus block known attacks.
- Encryption scrambles data so a thief cannot read it.
- Do not share personal data without a reason and permission.
Habits of good information managers
Check that information is correct and up to date. Remove duplicates. Keep what you must keep by law and delete what you no longer need. Write down your rules so that others in the team follow the same ones.
Key formulas and definitions
- Information management = collect + name + organise + store + find + protect
- Good name = what + when + version (maths-notes-2026-v2)
- Backup rule 3-2-1: 3 copies, 2 storage types, 1 copy far away
- Protect: keep it secret, correct, and available
Worked examples
1. Rename the file "scan1.pdf" so that it is well documented. It is Ravi's electricity bill from March 2026.
A good name is electricity-bill-2026-03-ravi.pdf. It tells what, when and whose, so it can be found by search.
2. A school keeps student marks on paper. Give two ways a computer database helps.
It can search any student in seconds and sort marks from highest to lowest. It also makes copies and backups easy, and prevents losing a paper.
3. A phone with all your photos falls in water. What would have saved the photos and what rule is this?
A backup copy in the cloud or on another device would have saved them. Keeping copies in different places follows the 3-2-1 backup rule.
Common mistakes
- Naming files "new", "final", "final2". Use what, when and version.
- Keeping only one copy and calling it safe. A single copy can be lost.
- Using one password everywhere. If one site leaks it, all are open.
- Putting the backup next to the original. Fire or theft takes both.