User:Felix/ontology

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  • Abstract (XML, ASN.1) or concrete (HTML, PEM)?

By serialisation method

How does it encode the data it stores?

  • Text-based
    • HTML-based (microformats)
    • JSON-based
    • XML-based
    • YAML-based
  • Binary
    • ASN.1
    • bencode
    • BSON
    • EBML

By content type

What data is it capable of holding?

  • Software
    • Machine code
      • Core dump
      • Executable
      • Shared object/dynamically-linked library
      • Object code
    • Bytecode
    • Programming language
    • Build automation scripts
    • GUI layout data
  • Abstract data
    • Schema (XML DTD, XSD, SQL DDL, JSON Schema…)
    • Primitive value
      • Identifier (GUID, UUID, URI…)
      • Variable-length integers
    • Identification/metadata
    • Encapsulation/transfer encoding (base64, quoted-printable, percent encoding…)
    • Database
    • Abstract structured data (SGML, XML, bencode, JSON, RIFF…)
  • File container
    • Archive (zip, tar, message/rfc822…)
    • Cryptography
      • Encrypted data envelope
      • Keys and certificates
      • Signature
    • General-purpose compression (gz, bzip2, xz…)
    • File system (FAT, extfs…)
    • Partition map (MBR, GPT…)
  • Text and hypertext
    • Character encoding (UTF-8, ISO 8859, code pages…)
    • Markup language (TeX, HTML, RTF…)
    • Page layout (PDF, PostScript, dvi, DjVu, XSL-FO…)
  • Multimedia
    • Audio
      • Waveform audio (WAV, mp3, FLAC…)
      • Instrumental audio (MIDI, MOD)
    • Media container (Ogg, Matroska)
    • Video and animation (MP4, GIF…)
    • Static graphics
      • Raster graphics (BMP, PNG, JPEG…)
      • Vector graphics (SVG, WMF…)
    • Fonts
      • Bitmap fonts (BDF, PCF…)
      • Outline fonts (sfnt)
    • Subtitles
    • Streaming manifest
    • Playlist
    • Game data

Some formats may fit several categories at once. SWF could fit in "Video and animation", "Multimedia container" and "Bytecode".

By use

How is it typically used?

  • General-purpose
  • Long-term archival
  • Data interchange
  • Internet/network messaging

Per-content type:

  • Raster graphics:
    • Photographic
    • Pixel art
    • Scanned documents
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