WebTools is "system" of multiple modules and libraries. Along with template engine capabilities, it features session management, global variables support, cookies support, and various database interfaces. It also features a pure Perl mail client, categories management, form checking, and libraries such as a CGI-based downloading library, HTML parsers, and a library that makes PHP functions available to Perl for ease of development.
XML::RDB is a Perl extension to convert XML files into RDB schemas and populate/unpopulate them. It works with XML schemas too. It analyzes relationships within either an XML file or an XML schema to create RDB tables to hold that document (or any XML document that conforms to the XML schema). It takes an XML file or URL as input for the XML::DOM::Parser, and extracts information to build and write DDL. An attempt is made to recognize relations within the XML structure then translate it to the DDL. That generated DDL is then loaded, parsing the DOM tree a second time to extract and load the data. At the bottom of the DDL are select statements to help get a view of those relations found, and XML data. xml_rdb also dumps the data back to XML format.
The DBIx::Perlish module provides the ability to work with databases supported by the DBI module using Perl's own syntax for the four most common operations: SELECT, UPDATE, DELETE, and INSERT. By using DBIx::Perlish, you can write most of your database queries using a domain-specific language with Perl syntax. However, the module is not intended to replace all use of SQL in your program. The DBIx::Perlish module quite intentionally neither implements nor cares about database administration tasks like schema design and management.
dbMan is a complex SQL monitor for common database systems (PgSQL, Oracle, MySQL etc.). It's based on Perl and DBI interfaces. Features include a command history buffer, tab completion, editing Oracle objects, simultaneous connections, SQL help, importing and exporting of tables, Oracle explain plan, and more. dbMan is made as a simple kernel and many extension modules, and you can make your modules with a simple HOWTO.
UnixODBC.pm provides Perl programs with a subset of the X/Open ODBC API for use with EasySoft's unixODBC DBMS libraries, as well as a peer to peer API for querying ODBC data sources on networked systems. In addition, it provides peer client and server scripts and configuration files, sample clients that perform ODBC queries on local and networked systems, result set output for RSS feeds, and two multi-host data managers: one that uses Apache and CGI to provide a Web browser interface, and another that uses Perl/Tk.