'''[http://sqlrelay.sourceforge.net/%|%SQL Relay]''' is a persistent database connection pooling, proxying, load balancing and query routing system for Unix and Linux. Provides native client API's for numerous programming languages, including [Tcl], and provides drivers for various database abstraction layers. TODO: Get [TDBC] on the list of abstraction layers. ** Attributes ** author: David Muse current version: 0.51 release time: 2013-08-05 ** Description ** SQL Relay is a persistent database connection pooling, proxying and load balancing system for Unix and Linux. SQL Relay includes Tcl interface. SQL Relay supports the following database backends: Oracle: Sybase: MS SQL Server: IBM DB2: MySQL: PostgreSQL: Firebird: SQLite: ODBC: MS Access: Blackray: ** Documentation ** [http://sqlrelay.sourceforge.net/sqlrelay/api/tcl/index.html%|%official Tcl refrence]: <> database