eXtremeDB Database Control

All databases, whether all-in-memory, persistent or hybrid (with both transient and persistent classes) occupy main memory in the application’s memory space.  For in-memory databases, a single memory device specifies the type of memory (conventional or shared) and its size. For persistent databases at least four memory devices are required. The memory is then allocated dynamically and passed to the eXtremeDB runtime to open or create the database. From this point until the runtime is shutdown this memory is exclusively managed by the runtime, though it can be extended later (by allocating more dynamic memory) if necessary.

Each database application process, and each thread in a multi-threaded application, must first connect to the database to perform any database operations. All database transactions are managed within the context of this connection. Before terminating, the application disconnects and closes the database before shutting down the runtime.

Please use the following links to view details of the relevant APIs:

Devices	Defining database devices
Database Open/Close	Creating/Opening and closing databases
Database Connect/Disconnect	Connecting to and disconnecting from databases
Extending Memory	Extending device memory