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... root of the database technology is fairly old and may pre-date disk file systems. The database engine is however, highly efficient, lean on disk space, very robust and fast. The development tools are less good. These vary between true 4GL functionality and assembler like programming techniques. This has led to it being called a '3 and half GL'. Rudimentary SQL tools are provided but these are bugged. 4thWrite itself is developed in 'C'. Version 7 of 4th Write was shipped with the system. As with any commercial product neither the 'C' code for 4thWrite, the 4thWrite code for INFOSTAT, nor the development tools are shipped with the system as standard. However, the Walton Centre was CHC's UK reference site and as such CHC personnel often developed the system on-site. As a result, the 4thWrite source code for Infostat and the development tools were installed on the Walton Centre's machines. The 'C' source code ...