JRel is a Relation manager which aims to be a useful tool library for any Java application which needs to cope with relations between operators. It offers a way to check inconsistencies in a logic expressions (AND,OR,NOT), and it can translate any expression to the disjunctive normal form.
PostgresSQL Backup and Restore is a class that can be used to generate backups of PostgreSQL. It accesses a given database and generates SQL statements that can be used to recreate the database tables and the values stored in their rows. The generated SQL is stored in a given file. The class can also restore a database from a previously generated backup by executing the SQL statements stored in a backup file.