NEC has also released for sale PERCIO, a database management system based on object-oriented technology. PERCIO stands for Persistence Concept in Object. The software is designed for use on the NEC Superstation EWS 4800 series of MIPS Technology Inc RISC-based Unix workstations. The features of the new software include: definition of variable length data (objects) and their handling in the same way as fixed length objects, making for a compact database; high-speed enquiry – faster than relational database by a factor of 10; large database space – through use of indirect virtual addressing up to 4,000m 2Gb objects can be used; and compatibility with C++, making creation of applications easier. NEC is hoping to sell 2,000 copies of the software in the next two years.