Activity
user_id FK
User
user_idFK
friend_id FK
dynamic_id PK
Course
Friends
course_id PK
activity _nameactivity _dateactivity_desrcactivity_imgactivity_urltotal
creator FK
activity_id PK
date
dynamic_namedynamic_datedynamic_contextdynamic_imgthumbs_up_numcomment_num
favorites
id PK
uid PK
nameurlstatusimgdescribecreat_date
activity_id FK
Dynamic
namenicknamephoneimgpasswordaddressemailbirthdaygenderdatefriendsNumidcard
gound_iddate
