Enea Adds Fine-Grain Locking and Cascaded Deletes to the World's Best Relational In-Memory Database Server

Polyhedra® 8.7 available now
STOCKHOLM, Sweden, April 9, 2013 – Enea® (NASDAQ OMX Nordic:ENEA), a world
leading operating system solution vendor for 3G and 4G infrastructure equipment,
is today announcing version 8.7 of the In-Memory Database Management System
Polyhedra®, adding locking and cascaded deletes to the Polyhedra family, while
still securing the best practices in real-time applications.

Locking

Database locking allows an application to claim part of the database, so that
others cannot make changes while the client with the lock is deciding on the
changes it wants to make. In comparison with locking on database, table, or row,
Polyhedra even makes it possible to lock individual fields of a record, which is
critical for real-time systems. This allows, for example, one client to lock
configuration fields for a record without stopping other applications updating
the value field as new readings come in. Polyhedra also allows locks to be
specified as pessimistic or optimistic and can automatically convert pessimistic
locks to optimistic locks after a short period. The new locking mechanism is
integrated into Polyhedra’s user-based security system, so the database
administrator can control which tables, and which attributes of a table, someone
can lock.

Cascaded deletes

Polyhedra allows the database administrator to define cross-references between
tables, by saying that a field is a ‘foreign key’ to another table in the
database. It also enforces referential integrity – which means that if the value
in a record for a foreign key attribute is non-null, then the record pointed at
must exist. The person creating the tables containing the foreign keys can say
what should happen when the referenced record is deleted: instead of the default
behavior of failing the transaction to maintain integrity, the reference can be
set to null, or the record containing the reference can be deleted – a ‘cascaded
delete’.

For more information, please visit http://www.enea.com/polyhedra / or contact:
For more information

North America and Europe
Catharina Paulcén, SVP Marketing & Communications
Phone: +46 8 507 141 33 or email: catharina.paulcen@enea.com

Asia Pacific:
Fredrik Sjöholm, Vice President of Software Sales Asia
Phone: +46 8 507 140 00 or email: fredrik.sjoholm@enea.com
About Enea
Enea is a global vendor of Linux and Real-time operating system solutions
including middleware, tools, protocols and services. The company is a world
leader in developing software platforms for communication-driven products in
multiple verticals, with extreme demands on high-availability and performance.
Enea’s expertise in operating systems and high availability middleware shortens
development cycles, brings down product costs and increases system reliability.
The company’s vertical solutions cover telecom handsets and infrastructure,
medtech, automotive and mil/aero. Enea has offices in Europe, North America and
Asia, and is listed on NASDAQ OMX Nordic Exchange Stockholm AB. For more
information please visit enea.com or contact us at info@enea.com.

Enea®, Enea OSE®, Netbricks®, Polyhedra® and Zealcore® are registered trademarks
of Enea AB and its subsidiaries. Enea OSE®ck, Enea OSE® Epsilon, Enea® Element,
Enea® Optima, Enea® Optima Log Analyzer, Enea® Black Box Recorder, Enea® LINX,
Enea® Accelerator, Polyhedra® Lite, Enea® dSPEED Platform, Enea® System Manager
and Embedded for Leaders(TM) are unregistered trademarks of Enea AB or its
subsidiaries. Any other company, product or service names mentioned above are
the registered or unregistered trademarks of their respective owner. © Enea AB
2013.