164 Personal Content Experience: Managing Digital Life in the Mobile Age AUDIO Attribute Type N Comment Artist String 0+ Name of the person performing. samplingFreq Integer 0,1 Sampling frequency in Hz. Album String 0,1 Name of the album the song belongs to. Track Integer 0,1 Track number in the album. Composer String 0,1 Name of the composer. TIME-BASED Attribute Type N Comment Length Integer 0,1 Length of the object in seconds. Bitrate Integer 0,1 Bitrate in bits per second. IMAGE Attribute Type N Comment Width Integer 1 Width of the image in pixels. Height Integer 1 Height of the image in pixels. Whitebalance Integer 0,1 EXIF whitebalance. zoomLevel Integer 0,1 EXIF zoom level. fl ashUsed Boolean 0,1 EXIF fl ag if fl ash was used. exposureProgram Integer 0,1 EXIF exposure program DVB-H Attribute Type N Comment legalText String 1 For the TV recordings. 5.6.7 Events All events and relationships can occur as many time as needed, so there is no N column in this table. EVENT COMMENT Created Object is created for the fi rst time. Deleted Content Object is deleted Metadata object still remains, i.e., framework has metadata about content objects that are no longer available.