dbExpress is a database-independent layer that defines common interface for fast access to Oracle database server from Delphi on Windows and Mac OS X for both 32-bit and 64-bit platforms. For each supported server dbExpress provides a driver as an independent library that implements the common dbExpress interfaces for processing queries and stored procedures. dbExpress provides high performance database connectivity and is easy to deploy. dbExpress driver for Oracle provides direct high performance access to Oracle database server. It can work using Oracle Call Interface (OCI) or SQL*Net directly. dbExpress driver for Oracle supports Oracle servers 12c,11g, 10g, 9i, 8i, 8.0, and 7.3, including Oracle Express Edition 11g and 10g.