PortaBase (portable database) can help you to manage your database, it is a program for conveniently managing one-table database files. It is available for many platforms, including Linux, Mac OS X (Tiger and up), Windows (XP and up), and Maemo (Diablo and Fremantle).
Notable features include:
1. String, Integer, Decimal, Boolean, Note (multi-line text), Date, Time, Calculation, Sequence, Image, and Enum column types
2. Add, edit, and delete rows of data
3. Custom data views (subsets of the columns in any order)
4. Filter the displayed rows using sets of conditions
5. Sort the rows by any combination of columns, each in ascending or descending order
6. Optional page navigation buttons, with custom number of rows per page
7. Add, delete, rearrange, and rename columns at any time
8. Specify default values for columns
9. View summary statistics for columns (total, average, min, max, etc.)
10. Import data from CSV, XML, and MobileDB files
11. Export data to CSV and XML files
12. Command-line format conversions (to and from XML, to and from CSV, from MobileDB)
13. Data file encryption
14. Unicode support
15. Pick any available font to use throughout the application (except on Mac OS X)
16. User-specified alternating row background colors (except on Fremantle)
17. Simple calculator widget for entering numeric data

The license of this software is Free, you can free download and free use this database management software.