Anyone knows how to auto update data in spreadsheet ??

i have 1 workbook ie. the summary that should retrieve datas from other workbooks.

Workbook A is the summary
eg.
Sheet 1 named: 14 Mar
Sheet 2 named: 20 Mar

eg. my database
Workbook B name: 14 Mar

Workbook C name :20 Mar


I need to create multiple sheets in workbook A and named via specific dates. What other way can i auto update worksheets in A when i have created for new database. This will be on continous basis.

pls advice... anyone