Function list:
- ptb_connect – connects to the database
- ptb_select – selects records according to given condition (and optionally sorts them)
- ptb_count – counts records in the database
- ptb_sort – sorts table
- ptb_map – shows record or value of one field, that corresponds with given value
- ptb_merge – merges two databases (juxtaposes columns)
- ptb_max – shows biggest numeric value of given field in the database
- ptb_min – shows smallest numeric value of given field in the database
- ptb_listUnique – lists unique values of given field in the database
- ptb_create – creates empty database
- ptb_add – appends one record to the database
- ptb_update – changes values in the database upon given condition
- ptb_delete – deletes records upon given condition
- ptb_write – writes down table to a file
- ptb_append – appends records from the second table
- ptb_fieldnames – lists names of all fields–or tells if given field exists
- ptb_addField – adds field to the data file
- ptb_delField – deletes field from the data file
- ptb_changeFieldname – changes name of field in the data file
- isThere – simple check for references in multi field
- isThereExt – advanced check for references in multi field