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CppDB is a SQL connectivity library that is designed to provide platform and database independent connectivity API similarly to what JDBC, ODBC and other connectivity libraries do. It supports Sqlite3, PostgreSQL, MySQL and as many RDBMSs as possible via cppdb-odbc bridge. It was written with performance, simplicity in use and locale safety as the primary goals in mind. It also provides both explicit verbose API and brief and nice syntactic sugar.

The replication and load balancing plugin is a plugin for the mysqlnd library. It can be used with PHP MySQL extensions (ext/mysql, ext/mysqli, PDO_MySQL) if they are compiled to use mysqlnd. The plugin inspects queries to do read-write splitting. Read-only queries are send to configured MySQL replication slave servers all other queries are redirected to the MySQL replication master server. Very little, if any, application changes required, dependent on the usage scenario required.

esqueleto is a bare bones, type-safe EDSL for SQL queries that works with unmodified persistent SQL backends. Its language closely resembles SQL, so you don't have to learn new concepts, just new syntax, and it's fairly easy to predict the generated SQL and optimize it for your backend. Most kinds of errors committed when writing SQL are caught as compile-time errors---although it is possible to write type-checked esqueleto queries that fail at runtime.

ADOdb stands for Active Data Objects Data Base. ADOdb is a database abstraction library for PHP. The PHP version currently supports an amazing number of databases, thanks to the wonderful ADOdb community: MySQL, PostgreSQL, Interbase, Firebird, Informix, Oracle, MS SQL, Foxpro, Access, ADO, Sybase, FrontBase, DB2, SAP DB, SQLite, Netezza, LDAP, and generic ODBC, ODBTP. The Sybase, Informix, FrontBase and PostgreSQL, Netezza, LDAP, ODBTP drivers are community contributions.

DBIWrapper is a generic database Perl module for accessing the Perl DBI database interface. It provides the lowest level of functionality needed by any program wanting to access databases via the DBI. Currently, DBIWrapper is only aware of Pg (PostgreSQL), mysql (MySQL) and ODBC DBD modules and how to work with them correctly. Support for transactions on MySQL is now checked for and if found to be available, the AutoCommit flag is turned off so that transactions will be used.

DBIx::Recordset is a perl module for abstraction and simplification of database access. The goal is to make standard database access (select/insert/update/delete) easier to handle and independend of the underlying DBMS. Special attention is made on web applications to make it possible to handle the state-less access and to process the posted data of formfields, but DBIx::Recordset is not limited to web applications.

[ excerpt from developer's www site ] The Power*Architect is a user-friendly data modeling tool created by data warehouse designers, and has many unique features geared specifically for the data warehouse architect. It allows users to reverse-engineer existing databases, perform data profiling on source databases, and auto-generate ETL metadata. Plus, the Power*Architect has the ability to take snapshots of database structures, allowing users to design DW data models while working offline.

RocksDB is an embeddable persistent key-value store for fast storage. RocksDB can also be the foundation for a client-server database but our current focus is on embedded workloads. RocksDB builds on LevelDB to be scalable to run on servers with many CPU cores, to efficiently use fast storage, to support IO-bound, in-memory and write-once workloads, and to be flexible to allow for innovation.

ADOdb stands for Active Data Objects Data Base. ADOdb is a database abstraction library for PHP. The PHP version currently supports an amazing number of databases, thanks to the wonderful ADOdb community: MySQL, PostgreSQL, Interbase, Firebird, Informix, Oracle, MS SQL, Foxpro, Access, ADO, Sybase, FrontBase, DB2, SAP DB, SQLite, Netezza, LDAP, and generic ODBC, ODBTP. The Sybase, Informix, FrontBase and PostgreSQL, Netezza, LDAP, ODBTP drivers are community contributions.

This gem provides the railtie that allows datamapper to hook into rails3 and thus behave like a rails framework component. Just like activerecord does in rails, dm-rails uses the railtie API to hook into rails. The two are actually hooked into rails almost identically. Creating new datamapper apps on rails3 from scratch is actually really easy. The following will guide you through the process.