Database tier

The database tier typically consists of a third party database server product. Communication between the database driver and the database server is tailored to the RDBMS being used. The database driver communicates with the RDBMS through structured query language (SQL) statements and the native application programming interface (API) of the RDBMS.

The database server consists of one of different third party RDBMS products, for example; Oracle, IBM DB2, or Microsoft SQL Server. All LN application data is stored in a relational database managed by an RDBMS. It is possible to have multiple RDBMS products in one LN installation, with some data residing in one database server and some data residing in another.