Database manager in borland C?

I need to turn in a project for my programming cl. We have to make a database manager in pure C language. We have to use linked lists and files. The program has to: create/modify/delete a table, add fields (names and types), and add/modify/delete entries. There needs to be a file/list for tables and another file/list for all entries. Any help (codes, examples, algorithm, etc) will be appreciated. Help needed ASAP!!