File System Model Drawbacks

Problems with File System Model

1. Changes to file structure or file location effect many programs causing high maintenance costs.
2. Data in various and sometimes proprietary data formats.
3. File indexes were easily corrupted if not open during data entry, updates , deletes.
4. All Data Validation was completely dependent on all application programs.
5. All Data security was completely dependent on all application programs.
6. Efficient Multi-application / multi-user access to the same file(s) required strict adherence to agreed upon locking strategies.
7. Integrated bcakup and re covery of hundreds of data files is difficult to control.
8. Tendency for redundant data to enter various data files.