Back-end database systems builder ShareBase Corp, Los Gatos, California – the company is still much better known as Britton-Lee Inc – reports that AT&T Co has bought five ShareBase SQL database servers valued at $2.5m: AT&T is the firm’s largest customer, having bought more than 160 database machines since 1981 and the latest sale involved four Server/8000 systems and one Server/700; the ShareBase Server/8000 is a RISC processor-based SQL server capable of managing 100Gb of data for hundreds of concurrent users and they will be used within AT&T’s Software Defined Network and related support applications, providing relational database management for 3B Unix boxes.