Table control is for maintaining Huge data in Matrix 
format. Normally we Use tc while maitaining item data. It 
is using for data maitanence. For Example one person have 
personal data, contact details, phone num etc. if we think 
that these will maitain as header data. bank details of 
that person we can maitain as item data.One person can have 
multiple bank accounts. in sap that bank details will 
maintain in table control.


BANKno BANKname BANKacctno BAnkaddress
1      Axis     1035210    Hyderabad
2      SBI      1544125    Hyderabad
3       ...     .......    .........
4      ....     ......     ......