PhpMyAdmin can manage a whole MySQL server (needs a super-user) as well as a single database. PhpMyAdmin is a free PHP database project. To accomplish the latter you'll need a properly set up MySQL user who can read/write only the desired database. It's up to you to look up the appropriate part in the MySQL manual.

Features of PHPMyAdmin:
- Intuitive web interface
- Browse and drop databases, tables, views, fields and indexes
- Create, copy, drop, rename and alter databases, tables, fields and indexes
- Maintenance server, databases and tables, with proposals on server configuration; execute, edit and bookmark any SQL-statement, even batch-queries
- Manage MySQL users and privileges
- Import data from CSV and SQL
- Export data to various formats: CSV, SQL, XML, PDF, ISO/IEC 26300 - OpenDocument Text and Spreadsheet, Word, Excel and LATEX formats
- Administering multiple servers
- Creating PDF graphics of your database layout
- Creating complex queries using Query-by-example (QBE)
- Searching globally in a database or a subset of it
- Transforming stored data into any format using a set of predefined functions, like displaying BLOB-data as image or download-link

Requirements:
- PHP 5.2.0+
- MySQL 5.0 or newer
- GD2 support in PHP
- mcrypt extension
- PHP zip extension
- mbstring and ctype extensions

What's New in This Version:
- Browse-mode improvements
- Grid editing
- Remember recent tables
- Remember last sort order by table
- Flexible column width
- Reorder columns
- More compact navigation bar
- AJAXification of many operations
- Reorganised server status page, with server monitoring
- Improved support for stored routines, events and triggers
- OpenGIS support
- Zoom-search in table search
- Drizzle support
- Improved ENUM/SET editor