摘要:In this paper, we study the dynamics of the market for Database Management
Systems (DBMS), which is commonly assumed to possess network effects and where
there is still some viable competition in our study period, 2000 – 2004.
Specifically, we make use of a unique and detailed dataset on several thousand
UK firms to study individual organizations’ incentives to adopt a particular
technology. We find that there are significant internal complement effects – in
other words, using an operating system and a DBMS from the same vendor seems to
confer some complementarities. We also find evidence for complementarities
between enterprise resource planning systems (ERP) and DBMS and find that as ERP
are frequently specific and customized, DBMS are unlikely to be changed once
they have been customized to an ERP. We also find that organizations have an
increasing tendency to use multiple DBMS on one site, which contradicts the
notion that different DBMS are near-perfect substitutes.