With the wide use of intemet,the network system architecture are getting more complicated,which,directly,leads to the increase of routing information base(RIB) of router,the subject that whether the traditional router can meet the requirement of high-speed,large-scale and much-link network peer session with random flapping in the future or not,is worthy of research.

The authors create an elementary information database for city transportation based on demand analysis, logic and physical design using delphi database technology.

Based on the water supply system of a city in North China, the municipal water supply information management and dispatching systems were developed, and water supply information database and water dispatching model -method base were set up.

Universities can establish teaching reference information database depending on its source advantage,realize the combination of e-learning and specialized teaching.

The database confirms its purpose and function accorded with the situation of Chongqing.

This paper outlines the construction of a Chinese-English bilingual phrase database:Chinese phrase information and English phrase information;the frequently asked questions;the implementation and application of phrase database.