• Our .h interface as of April 2 :
• Status gridfile_index :: create (char * filename, Key key1, ...);
• Status gridfile_index:: open();
• Status gridfile_index::close();
• Status gridfile_index::insert_record(RID record_id, Key key1, ...);
• Status gridfile_index::delete_record(RID record_id, Key1, ...);
• Status gridfile_scan::() ;//full file scan
• Status gridfile_scan::(Key key1, ...); //exact key match scan
• Status gridfile_range_scan::gridfile_range_scan(Key key1, Key Key1_low, Key Key1_high ...);//range scan
• // Index_scan is virtual class ancestor of gridfile_scan and gridfile_range_scan
• Status Index_scan:: get_next_record (RID&record_id)
• Status Index_scan::delete_current_record(RID &record_id)

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