1. Attribute related to Bank Information has been deleted form Account Entity.
 2. Now Account Entity contains only one attribute - Account_No
 3. New Bank Entity has been added which contains information related to Bank details.
 4. Cardinality of relationships has been added in new E-R diagram.
 5. The background and color of E-R Diagram has been modified ,
    PNG and PDF file of E-R Diagram has been added and E-R_Diagram_BAS_FINAL.pdf has been removed from Documents folder.