This is our database course project.

####account service
table account (id, username, password, addr, detail) addr and detail do not need autocheck

basic scenes for account service
a. check username exist or not.
b. check username and password.
c. add username and password.
d. update profile(addr, detail).
e. get profile
g. update password

addition:
table subscription (id, subscriber_id, channel_id)
v. check (channel subscriber) exist or not
e. add channel of subscriber.
f. remove channel of subscriber.

table contact(userid1, userid2, type)
type=3 is contact, type=1 is foe/block, type=2 is friend
a. retrieve friends/foes/contact of myself.
b. add a friend relationship to you
c. add a foe to you.
c. add a contact to you.
d. remove a foe/contact/friendship of you.
d. return the friendship type A to B

####Data sharing service
table media (mediaid, title, username, type, category, sharetype, path, detail, posttime, canDiscuss, canrate, keywords, viewcount, avgrate)
type=1 video, type=2 audio, type=3 image,
sharetype=0 public, sharetype=1 just friends
category=1 sports, category=2 entainment

basic scenes for Data sharing service
--upload and download
g. add media with all attributes(title, username, type, catetory, detail, keywords, sharetype(blocked friends), candiscuss, canrate, )
f. view media
viewplus($mediaid)
updateAvgrate($mediaid)
viewMedia($mediaid)
view all the infomation of media detail here

addition:
share with everybody or just friends,
allow discussion or not,
allow rating or not

####media service
table media (mediaid, title, username, type, category, sharetype, path, detail, posttime, canDiscuss, canrate, keywords, viewcount, avgrate)
type=1 video, type=2 audio, type=3 image,
sharetype=0 public, sharetype=1 just friends
category=1 sports, category=2 entainment

basic scenes for media service
--view
by category and type, by type,
type=1 video, type=2 audio, type=3 image

by user(subscription),
table subscription (id, subscriber_id, channel_id)
browseByChannel($username)
only public media

by user's play list,
table playlist (id, subscriber_id, channel_id)
showPlaylists($username)
browseByPlaylist($playlistid)
rmPlaylistMedia($playlistid, $mediaid)
addPlaylistMedia($playlistid, mediaid)

by user's favorite list,
table favorite (id, subscriber_id, channel_id)
browseByFavorite($username)
rmFavoriteMedia($username, $mediaid)
addFavoriteMedia($username, $mediaid)

addition:
show by most viewed, by upload recent
browseByViewcountAndType($type, $num)
browseByUploadrecentAndType($type, $num)

browseByFriendshare($username)

####User interaction service
Messages
sendMessage($sender, $receiver, $message)
getMessages($username)

Comments
addComment($username, $mediaid)
getComments($mediaid)
rmComment($commentid)

addition:
c. rate media
rmRate($mediaid, $username)
existRate($mediaid, $username)
rateMedia($mediaid, $username, $score)

e. groups
function createGroup($groupName, $topic, $detail) return groupid
function showGroups()
getDiscusses($groupid)
addDiscuss( $username, $groupid, $content)

####search service
keyword-based search
search($words) return list of (mediaid, title)
multiple words

filter
$type = 0 means All, $category = 0 means All,
$starttime = '' means All
filterSearch($words, $type, $category, $starttime )

show words of wordcloud
manually
search($words)

media recommendation
with keywords
recommend($mediaid, $num)