Data
Data are facts we can save. A temperature, a bus time, and a store price are data.
Start here / Lesson 01
Data is a fact we can save.
Your height. A bus time. The price of an apple. These are little pieces of information. We call them data.
Dataset
A dataset is a group of facts about one topic. A list of park names and park locations is one dataset.
Database
A database keeps facts in order. It helps us find the facts we need.
Data center
A data center is a place with many computers. They save information and do work for apps and websites.
Server
A server is a computer that answers requests. When you ask to open a page, a server can send it to you.
The cloud
The cloud means computers reached over a network. Those computers still sit in real places.
One fact is a start. A pattern is a clue.
Try it / made-up data
Where should the bus team look first?
These are pretend average late minutes at four stops. A bigger number is a clue to check.
| Stop | Late minutes |
|---|---|
| Oak Street | 8 |
| Park Road | 2 |
| Library | 11 |
| Lake Lane | 1 |
Four checks before you trust a number.
- 01Who made it? Find the source.
- 02When was it collected? Check the date.
- 03What does it count? Check the unit and place.
- 04What is missing? Ask who or what was left out.
