OpenContentDatabase

Design thoughts for a database for an open content CD builder

=common attributes= (all items will have this plus their specific attributes)
 * version (internal)
 * binary data (blob)
 * date
 * original file name (internal from upload)
 * author/credit
 * original source URL
 * license(s) -new licenses will be added as discovered
 * size (in bytes)
 * tags
 * subject (la, math, ss, sci)

=specific attributes=

clipart

 * format
 * width
 * height

images

 * format
 * width
 * height
 * orientation (?)

audio

 * format
 * length (in seconds)
 * genre

video

 * format
 * width
 * height
 * length (in seconds)

=possible licenses=
 * public domain
 * CC BY
 * CC BY NC
 * CC BY NC SA
 * CC BY SA
 * GFDL
 * Other (with a text box to note what it is)

=subjects=
 * math
 * science
 * language arts
 * social studies