Postgresql AutoDoc is a utility which will run through PostgreSQL system tables and returns HTML, DOT, and 2 styles of XML which describes the database.
KSqlAnalyzer is a tool for easy accessing the data of a MS-SQL-Database. The functionality and the look&feel are similar to the program 'SQL-Query-Analyzer' written by Microsoft.
Goal of oraschemadoc is "JavaDoc" style detailed documentation for all objects in schema covering Oracle specific features. Result of execution of oraschemadoc is set of static html files. There are more features under development...
MetadataExtractor reads entire backup file and parses system tables data which contains actual information about tables, data types, columns and indexes and then saves collected
data in simple format of XML file. After that extractor builds DDL scripts for creating database objects and wtites into the text file.
The main goal of this tool is to restore database structure in the case of lack of any knowledge about that database. The tool supports backups made by ASE Sybase versions from 12.5 to 15.7
Another PostgreSQL Diff Tool (also known as apgdiff) is free PostgreSQL diff tool that is useful for comparison/diffing of database schemas. The tool compares two database dump files and creates output with DDL statements that can be used to update old database schema to new one or to see in what both databases differ.