Static access pattern in Distributed Databases
I found what you copied in the following text

The idea is that users access (querying, updating or etc ..) of the database changes with time. It may be at its peaks in sale seasons for example if the database belongs to a commercial applications. etc .. - if it is always fixed and predicted then it is static. 

From your copied text: it says that: "it is difficult to find many real-life distributed applications that would be classified as static. The significant question, then, is not whether a system is static or dynamic, but how dynamic it is." -- 

perhaps, a static access pattern is a collection of sensor nodes that update the database with their readings in a periodic time, with equal size updates always. -- or a set of servers that get a synchronization clock in a periodic manner  (quite theoritical i guess)