Ameritech subsidiary Applied Data Research Inc in Princeton, New Jersey has major new XA releases of its ADR/Datacom System relational database management system. The company says that the new software provides advanced support for MVS/XA, VSE/SP2 and multiprocessors, and that performance improvements, which have been made in several areas of the system, will be especially noticeable for high-volume transaction processing users. In particular it claims that trials at high volume client sites show system throughput up by 25% to 35%, Online CICS response time down 25% to 35%; and CPU usage down 10% to 15%. The new release of Datacom/DB runs in 31-bit addressing mode, takes advantage of MVS/XA facilities, and operates above the 16Mb line. Performance enhancements in release 7.5 also include a faster set-selection optimiser, caching improvements, reduced request processing path lengths, improvements to input-output drivers, and improved methods for handling large database environments. It also exploits dyadic and quadratic processors by distributing the input-output workload across the multiple processors. DataDictionary release 2.4 has a new dynamic cataloging facility that supports database prototyping with change control through version management, and allows multiple test, production and history versions of database definitions to be established, tested, used, archived and refreshed, with full integrity and control. As a test version is copied to production status, the system automatically archives the previous production definition. Users may decide how many history versions are to be kept. Other facilities allow the behaviour of different data base design factors to be evaluated and certified. The new release of ADR/DL provides integrated services to users of IBM’s PDF editor and native TSO facilities. Cobol programmers working under TSO can use ADR/DL’s extended workstation services including program shell generation, keyword expansion for code generation and job submission. ADR/DL 3.0 conforms in appearance and operation to IBM’s ISPF/PDF products and adheres to recommended standards for SIPF dialogs. The new releases are available immediately and Datacom/DB is $145,900 for OS, $144,500 for DOS; DataDictionary is $39,600 and $32,600; ADR/DL is $28,600 and $23,500, for permanent licences; half-year, three and five year leases are also available.