Files, Storage & Databases

5 interactive Computer Science simulations on files, storage & databases.

Computer Science · Files, Storage & Databases Directory tree – paths and file search A directory tree you can click to expand, collapse, and select, just like File Explorer. Students pick a file to read its absolute path... Ages 11–12
Computer Science · Files, Storage & Databases Relational databases and queries Two tables, HOC_SINH and LOP, are linked by the foreign key MaLop pointing to the primary key MaLop of the LOP table. Students build a... Ages 16–17
Computer Science · Files, Storage & Databases File Storage – local disk, server or the cloud The same file is kept in three places: a personal computer's disk, a school server, or a cloud storage service. Students click each... Ages 16–17
Computer Science · Files, Storage & Databases Data compression and multi-copy backup A file is compressed three ways: kept as is, compressed losslessly (ZIP, PNG, FLAC), and compressed with loss (JPEG, MP3, H.264); the... Ages 17–18
Computer Science · Files, Storage & Databases How search engines rank results A small collection of twelve web pages with different titles, URLs, publish dates and trust levels. Students type a query into the... Ages 14–15