_ALL, _TL, _VL, _V,_F,_VL,_A,_AVN objects

we all find different objects with
lots of suffixes...her i am putting the meaning of some those
suffixes..i read this thing in one of the blogs i find it
good...so i am posting it as it will useful to understand these
things..

• 
  _ALL : Table holds all
  the information about different operating units. Multi-Org
  environment. You can also set the client_info to specific
  operating unit to see the data specific to that operating
  unit only.


• _TL are
  tables corresponding to another table with the same name
  minus the _TL. These tables provide multiple language
  support. For each item in the table without _TL there can be
  many rows in the _TL table, but all with different values in
  the LANGUAGE column.


• _B theseare the BASE tables. They are very important and the data is stored in the table with all
  validations.
  
  It is
  supposed that these table will always contain the perfect
  format data.
  
  
  If anything happens to the BASE table data, then it is a
  data corruption issue.


• _F
  these are date tracked tables, which occur in HR and
  Payroll. For these there are two date columns
  EFFECTIVE_START_DATE and EFFECTIVE_END_DATE which together
  with the PK identifies a row uniquely. The date intervals
  cannot overlap. Many think they are Secured data. Guess
  someone from Oracle confirms.




• _V tables
  are the views created on base tables


• _VL are
  views for multi language tables which combines the row of
  the base table with the corresponding row of the _TL table
  where the LANGUAGE = USERENV(’LANG’).


• _S are
  sequences, used for finding new values for the primary key
  of a table.
  


• _A
  are Audit Shadow Tables


• _AVN and
  _ACN are Audit
  Shadow Views (when data was changed, and with what values