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Data is the second Big Idea. Some topics include data compression and extracting information from data. Data is stored in bits of binary code and everything stored in computers, from every webpage to every file, is data.
Data Compression
Some data is so large that storing it becomes a problem. This data is known as Big Data. However, there are ways to compress data so it takes up less space. For example, lossless compression is a form of compression that is reversible, such as WebP or PNG files. Lossy compression, however, cannot be reversed, such as storing a file as a JPG file.
Data Encryption
Some people may want to access data containing personal information. This means that there needs to be a way to safely and securely send data over the internet. Luckily for everyone on the internet, there are data encryption methods. This scrambles the data so a cybercriminal cannot get the information easily. There are multiple encryption methods, with the most popular for sending data over the internet being Public Key Encryption, which is also the safest.
Relation to Computer Science
Similarly to Creative Development, almost everything in Computer Science relies on data. The building blocks of everything computers do, besides the hardware, is binary code, which itself is data. Computers would not be able to work without data, and data would not be able to be stored without computers. Therefore, data is incredibly important to computer science.
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