title: Difference between Standard table and Hashed table Abap
body: <p>Can you please give me a clear explanation on the difference between using "standard table of", "Hashed table of", or simply "table of". Also what is the meaning of "initial size 0"?</p>
  
  <p>For reference please have a look in to below code..</p>
  
  <pre><code>it_c01_d006_raw TYPE STANDARD TABLE OF /bic/ac01_d00600
                         INITIAL SIZE 0,
  it_c01_d006     TYPE HASHED TABLE OF /bic/ac01_d00600
                         WITH UNIQUE KEY /bic/cemployee /bic/cdatetype,
  it_c01_d002     TYPE TABLE OF /bic/ac01_d00200.
  </code></pre>