Read record, write record, seek

Yes, with the RandomAccessFile library.
However I recommend you to consider using SQLite instead. It supports very large files and it is very fast.

Erel said:

Yes, with the RandomAccessFile library.
However I recommend you to consider using SQLite instead. It supports very large files and it is very fast.

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Thank you Erel for this help! I am going to see RandomAccessFile library.

Yes i know that SQL is accessible under B4A. But i have my own indexed file management routines, already implemented on Windows mobile and on PIC microcontroler. In addition they are very faster than SQL.
Today i make a full B4A portage of my applications dedicated to blind persons (Petit Poucet GRAND RAID and MOBILE READER).

Thank you again for your invaluable help.