POET
POET (Persistent Objects and Extended database Technology) Version 2.0 was an object-oriented database. It stored users' C++ objects in their databases. POET understood users' C++ class declarations—users never had to translate their classes into tables. POET supported encapsulation, inheritance, polymorphism, object identity and references among objects.
POET had traditional database features, such as queries, device-independent storage formats, nested transactions and locking. It also provided innovative features: users could install functions to monitor the progress of long queries; they could install callback functions that would be invoked when someone else stores, deletes, locks, or unlocks an object; or they could ask POET to update objects in their memory whenever they made a change in the database.
POET ran on NEXTSTEP for Intel processors. Macintosh, Windows 3.1 Windows for Workgroups, Win32s, Windows NT, Novell (NLM), OS/2, SunOS, Solaris, AIX, HP/UX, SGI Irix and SCO UNIX.
Technical support, training and documentation were available. Runtime licenses were available at additional cost. A white paper on the advantages of object DBMS versus relational DBMS was available.
POET Software
$999 single user
$3,395 client/server
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