How can I connect a QT 4.x application with Postgres in a Red Hat Enterprise Linux environment?
You have two basic options for connecting a QT application to a PostgreSQL based database on RHEL. The first option is based on the QPSQL driver and the second is based on the QODBC. The easiest, and most performant way to connect to Postgres is using the QPSQL driver supplied with QT. The QT PostgreSQL Connector is C++ and cross platform. The native driver uses libpq (the Postgres driver) under the hood which is fast, and allows the user to access the low level libpq interface for more specialized applications and the full features of Postgres and Postgres Plus Advanced Server. Depending on the build of the underlying libpq, this also allows the use of SSL, Kerberos, SSPI/GSSPI, LDAP connection management and other libpq features. The second basic option is to connect using ODBC. The QODBC driver is more appropriate when building an application which must support multiple different backend database engines. It can be slower, due to the additional abstraction layer, and doesn’t allow t
